diff --git a/extensions/CHCAT1320/midi.js b/extensions/CHCAT1320/midi.js
new file mode 100644
index 0000000000..beef5f8c6e
--- /dev/null
+++ b/extensions/CHCAT1320/midi.js
@@ -0,0 +1,111 @@
+// Name:MIDI Parser
+// ID: midiParser
+// Description: Parse MIDI files into JSON.
+// By: CHCAT1320
+// License: MIT
+
+
+//  tonejs/midi 
+const MidiLibrary = `
+!function(t,e){if("object"==typeof exports&&"object"==typeof module)module.exports=e();else if("function"==typeof define&&define.amd)define([],e);else{var r=e();for(var n in r)("object"==typeof exports?exports:t)[n]=r[n]}}("undefined"!=typeof self?self:this,(function(){return(()=>{var t={507:(t,e,r)=>{"use strict";function n(t){var e=[];return i(t,e),e}function i(t,e){for(var r=0;r<t.length;r++){var n=t[r];Array.isArray(n)?i(n,e):e.push(n)}}r.r(e),r.d(e,{flatten:()=>n})},289:(t,e,r)=>{e.parseMidi=r(666),e.writeMidi=r(865)},666:t=>{function e(t){for(var e,n=new r(t),i=[];!n.eof();){var a=o();i.push(a)}return i;function o(){var t={};t.deltaTime=n.readVarInt();var r=n.readUInt8();if(240==(240&r)){if(255!==r){if(240==r)return t.type="sysEx",a=n.readVarInt(),t.data=n.readBytes(a),t;if(247==r)return t.type="endSysEx",a=n.readVarInt(),t.data=n.readBytes(a),t;throw"Unrecognised MIDI event type byte: "+r}t.meta=!0;var i=n.readUInt8(),a=n.readVarInt();switch(i){case 0:if(t.type="sequenceNumber",2!==a)throw"Expected length for sequenceNumber event is 2, got "+a;return t.number=n.readUInt16(),t;case 1:return t.type="text",t.text=n.readString(a),t;case 2:return t.type="copyrightNotice",t.text=n.readString(a),t;case 3:return t.type="trackName",t.text=n.readString(a),t;case 4:return t.type="instrumentName",t.text=n.readString(a),t;case 5:return t.type="lyrics",t.text=n.readString(a),t;case 6:return t.type="marker",t.text=n.readString(a),t;case 7:return t.type="cuePoint",t.text=n.readString(a),t;case 32:if(t.type="channelPrefix",1!=a)throw"Expected length for channelPrefix event is 1, got "+a;return t.channel=n.readUInt8(),t;case 33:if(t.type="portPrefix",1!=a)throw"Expected length for portPrefix event is 1, got "+a;return t.port=n.readUInt8(),t;case 47:if(t.type="endOfTrack",0!=a)throw"Expected length for endOfTrack event is 0, got "+a;return t;case 81:if(t.type="setTempo",3!=a)throw"Expected length for setTempo event is 3, got "+a;return t.microsecondsPerBeat=n.readUInt24(),t;case 84:if(t.type="smpteOffset",5!=a)throw"Expected length for smpteOffset event is 5, got "+a;var o=n.readUInt8();return t.frameRate={0:24,32:25,64:29,96:30}[96&o],t.hour=31&o,t.min=n.readUInt8(),t.sec=n.readUInt8(),t.frame=n.readUInt8(),t.subFrame=n.readUInt8(),t;case 88:if(t.type="timeSignature",4!=a)throw"Expected length for timeSignature event is 4, got "+a;return t.numerator=n.readUInt8(),t.denominator=1<<n.readUInt8(),t.metronome=n.readUInt8(),t.thirtyseconds=n.readUInt8(),t;case 89:if(t.type="keySignature",2!=a)throw"Expected length for keySignature event is 2, got "+a;return t.key=n.readInt8(),t.scale=n.readUInt8(),t;case 127:return t.type="sequencerSpecific",t.data=n.readBytes(a),t;default:return t.type="unknownMeta",t.data=n.readBytes(a),t.metatypeByte=i,t}}else{var s;if(0==(128&r)){if(null===e)throw"Running status byte encountered before status byte";s=r,r=e,t.running=!0}else s=n.readUInt8(),e=r;var c=r>>4;switch(t.channel=15&r,c){case 8:return t.type="noteOff",t.noteNumber=s,t.velocity=n.readUInt8(),t;case 9:var u=n.readUInt8();return t.type=0===u?"noteOff":"noteOn",t.noteNumber=s,t.velocity=u,0===u&&(t.byte9=!0),t;case 10:return t.type="noteAftertouch",t.noteNumber=s,t.amount=n.readUInt8(),t;case 11:return t.type="controller",t.controllerType=s,t.value=n.readUInt8(),t;case 12:return t.type="programChange",t.programNumber=s,t;case 13:return t.type="channelAftertouch",t.amount=s,t;case 14:return t.type="pitchBend",t.value=s+(n.readUInt8()<<7)-8192,t;default:throw"Unrecognised MIDI event type: "+c}}}}function r(t){this.buffer=t,this.bufferLen=this.buffer.length,this.pos=0}r.prototype.eof=function(){return this.pos>=this.bufferLen},r.prototype.readUInt8=function(){var t=this.buffer[this.pos];return this.pos+=1,t},r.prototype.readInt8=function(){var t=this.readUInt8();return 128&t?t-256:t},r.prototype.readUInt16=function(){return(this.readUInt8()<<8)+this.readUInt8()},r.prototype.readInt16=function(){var t=this.readUInt16();return 32768&t?t-65536:t},r.prototype.readUInt24=function(){return(this.readUInt8()<<16)+(this.readUInt8()<<8)+this.readUInt8()},r.prototype.readInt24=function(){var t=this.readUInt24();return 8388608&t?t-16777216:t},r.prototype.readUInt32=function(){return(this.readUInt8()<<24)+(this.readUInt8()<<16)+(this.readUInt8()<<8)+this.readUInt8()},r.prototype.readBytes=function(t){var e=this.buffer.slice(this.pos,this.pos+t);return this.pos+=t,e},r.prototype.readString=function(t){var e=this.readBytes(t);return String.fromCharCode.apply(null,e)},r.prototype.readVarInt=function(){for(var t=0;!this.eof();){var e=this.readUInt8();if(!(128&e))return t+e;t+=127&e,t<<=7}return t},r.prototype.readChunk=function(){var t=this.readString(4),e=this.readUInt32();return{id:t,length:e,data:this.readBytes(e)}},t.exports=function(t){var n=new r(t),i=n.readChunk();if("MThd"!=i.id)throw"Bad MIDI file.  Expected 'MHdr', got: '"+i.id+"'";for(var a=function(t){var e=new r(t),n={format:e.readUInt16(),numTracks:e.readUInt16()},i=e.readUInt16();return 32768&i?(n.framesPerSecond=256-(i>>8),n.ticksPerFrame=255&i):n.ticksPerBeat=i,n}(i.data),o=[],s=0;!n.eof()&&s<a.numTracks;s++){var c=n.readChunk();if("MTrk"!=c.id)throw"Bad MIDI file.  Expected 'MTrk', got: '"+c.id+"'";var u=e(c.data);o.push(u)}return{header:a,tracks:o}}},865:t=>{function e(t,e,i){var a,o=new n,s=e.length,c=null;for(a=0;a<s;a++)!1!==i.running&&(i.running||e[a].running)||(c=null),c=r(o,e[a],c,i.useByte9ForNoteOff);t.writeChunk("MTrk",o.buffer)}function r(t,e,r,n){var i=e.type,a=e.deltaTime,o=e.text||"",s=e.data||[],c=null;switch(t.writeVarInt(a),i){case"sequenceNumber":t.writeUInt8(255),t.writeUInt8(0),t.writeVarInt(2),t.writeUInt16(e.number);break;case"text":t.writeUInt8(255),t.writeUInt8(1),t.writeVarInt(o.length),t.writeString(o);break;case"copyrightNotice":t.writeUInt8(255),t.writeUInt8(2),t.writeVarInt(o.length),t.writeString(o);break;case"trackName":t.writeUInt8(255),t.writeUInt8(3),t.writeVarInt(o.length),t.writeString(o);break;case"instrumentName":t.writeUInt8(255),t.writeUInt8(4),t.writeVarInt(o.length),t.writeString(o);break;case"lyrics":t.writeUInt8(255),t.writeUInt8(5),t.writeVarInt(o.length),t.writeString(o);break;case"marker":t.writeUInt8(255),t.writeUInt8(6),t.writeVarInt(o.length),t.writeString(o);break;case"cuePoint":t.writeUInt8(255),t.writeUInt8(7),t.writeVarInt(o.length),t.writeString(o);break;case"channelPrefix":t.writeUInt8(255),t.writeUInt8(32),t.writeVarInt(1),t.writeUInt8(e.channel);break;case"portPrefix":t.writeUInt8(255),t.writeUInt8(33),t.writeVarInt(1),t.writeUInt8(e.port);break;case"endOfTrack":t.writeUInt8(255),t.writeUInt8(47),t.writeVarInt(0);break;case"setTempo":t.writeUInt8(255),t.writeUInt8(81),t.writeVarInt(3),t.writeUInt24(e.microsecondsPerBeat);break;case"smpteOffset":t.writeUInt8(255),t.writeUInt8(84),t.writeVarInt(5);var u=31&e.hour|{24:0,25:32,29:64,30:96}[e.frameRate];t.writeUInt8(u),t.writeUInt8(e.min),t.writeUInt8(e.sec),t.writeUInt8(e.frame),t.writeUInt8(e.subFrame);break;case"timeSignature":t.writeUInt8(255),t.writeUInt8(88),t.writeVarInt(4),t.writeUInt8(e.numerator);var h=255&Math.floor(Math.log(e.denominator)/Math.LN2);t.writeUInt8(h),t.writeUInt8(e.metronome),t.writeUInt8(e.thirtyseconds||8);break;case"keySignature":t.writeUInt8(255),t.writeUInt8(89),t.writeVarInt(2),t.writeInt8(e.key),t.writeUInt8(e.scale);break;case"sequencerSpecific":t.writeUInt8(255),t.writeUInt8(127),t.writeVarInt(s.length),t.writeBytes(s);break;case"unknownMeta":null!=e.metatypeByte&&(t.writeUInt8(255),t.writeUInt8(e.metatypeByte),t.writeVarInt(s.length),t.writeBytes(s));break;case"sysEx":t.writeUInt8(240),t.writeVarInt(s.length),t.writeBytes(s);break;case"endSysEx":t.writeUInt8(247),t.writeVarInt(s.length),t.writeBytes(s);break;case"noteOff":(c=(!1!==n&&e.byte9||n&&0==e.velocity?144:128)|e.channel)!==r&&t.writeUInt8(c),t.writeUInt8(e.noteNumber),t.writeUInt8(e.velocity);break;case"noteOn":(c=144|e.channel)!==r&&t.writeUInt8(c),t.writeUInt8(e.noteNumber),t.writeUInt8(e.velocity);break;case"noteAftertouch":(c=160|e.channel)!==r&&t.writeUInt8(c),t.writeUInt8(e.noteNumber),t.writeUInt8(e.amount);break;case"controller":(c=176|e.channel)!==r&&t.writeUInt8(c),t.writeUInt8(e.controllerType),t.writeUInt8(e.value);break;case"programChange":(c=192|e.channel)!==r&&t.writeUInt8(c),t.writeUInt8(e.programNumber);break;case"channelAftertouch":(c=208|e.channel)!==r&&t.writeUInt8(c),t.writeUInt8(e.amount);break;case"pitchBend":(c=224|e.channel)!==r&&t.writeUInt8(c);var f=8192+e.value,p=127&f,l=f>>7&127;t.writeUInt8(p),t.writeUInt8(l);break;default:throw"Unrecognized event type: "+i}return c}function n(){this.buffer=[]}n.prototype.writeUInt8=function(t){this.buffer.push(255&t)},n.prototype.writeInt8=n.prototype.writeUInt8,n.prototype.writeUInt16=function(t){var e=t>>8&255,r=255&t;this.writeUInt8(e),this.writeUInt8(r)},n.prototype.writeInt16=n.prototype.writeUInt16,n.prototype.writeUInt24=function(t){var e=t>>16&255,r=t>>8&255,n=255&t;this.writeUInt8(e),this.writeUInt8(r),this.writeUInt8(n)},n.prototype.writeInt24=n.prototype.writeUInt24,n.prototype.writeUInt32=function(t){var e=t>>24&255,r=t>>16&255,n=t>>8&255,i=255&t;this.writeUInt8(e),this.writeUInt8(r),this.writeUInt8(n),this.writeUInt8(i)},n.prototype.writeInt32=n.prototype.writeUInt32,n.prototype.writeBytes=function(t){this.buffer=this.buffer.concat(Array.prototype.slice.call(t,0))},n.prototype.writeString=function(t){var e,r=t.length,n=[];for(e=0;e<r;e++)n.push(t.codePointAt(e));this.writeBytes(n)},n.prototype.writeVarInt=function(t){if(t<0)throw"Cannot write negative variable-length integer";if(t<=127)this.writeUInt8(t);else{var e=t,r=[];for(r.push(127&e),e>>=7;e;){var n=127&e|128;r.push(n),e>>=7}this.writeBytes(r.reverse())}},n.prototype.writeChunk=function(t,e){this.writeString(t),this.writeUInt32(e.length),this.writeBytes(e)},t.exports=function(t,r){if("object"!=typeof t)throw"Invalid MIDI data";r=r||{};var i,a=t.header||{},o=t.tracks||[],s=o.length,c=new n;for(function(t,e,r){var i=null==e.format?1:e.format,a=128;e.timeDivision?a=e.timeDivision:e.ticksPerFrame&&e.framesPerSecond?a=-(255&e.framesPerSecond)<<8|255&e.ticksPerFrame:e.ticksPerBeat&&(a=32767&e.ticksPerBeat);var o=new n;o.writeUInt16(i),o.writeUInt16(r),o.writeUInt16(a),t.writeChunk("MThd",o.buffer)}(c,a,s),i=0;i<s;i++)e(c,o[i],r);return c.buffer}},805:(t,e)=>{"use strict";function r(t,e,r){void 0===r&&(r="ticks");var n=0,i=t.length,a=i;if(i>0&&t[i-1][r]<=e)return i-1;for(;n<a;){var o=Math.floor(n+(a-n)/2),s=t[o],c=t[o+1];if(s[r]===e){for(var u=o;u<t.length;u++)t[u][r]===e&&(o=u);return o}if(s[r]<e&&c[r]>e)return o;s[r]>e?a=o:s[r]<e&&(n=o+1)}return-1}Object.defineProperty(e,"__esModule",{value:!0}),e.insert=e.search=void 0,e.search=r,e.insert=function(t,e,n){if(void 0===n&&(n="ticks"),t.length){var i=r(t,e[n],n);t.splice(i+1,0,e)}else t.push(e)}},543:(t,e)=>{"use strict";Object.defineProperty(e,"__esModule",{value:!0}),e.ControlChange=e.controlChangeIds=e.controlChangeNames=void 0,e.controlChangeNames={1:"modulationWheel",2:"breath",4:"footController",5:"portamentoTime",7:"volume",8:"balance",10:"pan",64:"sustain",65:"portamentoTime",66:"sostenuto",67:"softPedal",68:"legatoFootswitch",84:"portamentoControl"},e.controlChangeIds=Object.keys(e.controlChangeNames).reduce((function(t,r){return t[e.controlChangeNames[r]]=r,t}),{});var r=new WeakMap,n=new WeakMap,i=function(){function t(t,e){r.set(this,e),n.set(this,t.controllerType),this.ticks=t.absoluteTime,this.value=t.value}return Object.defineProperty(t.prototype,"number",{get:function(){return n.get(this)},enumerable:!1,configurable:!0}),Object.defineProperty(t.prototype,"name",{get:function(){return e.controlChangeNames[this.number]?e.controlChangeNames[this.number]:null},enumerable:!1,configurable:!0}),Object.defineProperty(t.prototype,"time",{get:function(){return r.get(this).ticksToSeconds(this.ticks)},set:function(t){var e=r.get(this);this.ticks=e.secondsToTicks(t)},enumerable:!1,configurable:!0}),t.prototype.toJSON=function(){return{number:this.number,ticks:this.ticks,time:this.time,value:this.value}},t}();e.ControlChange=i},906:(t,e,r)=>{"use strict";Object.defineProperty(e,"__esModule",{value:!0}),e.createControlChanges=void 0;var n=r(543);e.createControlChanges=function(){return new Proxy({},{get:function(t,e){return t[e]?t[e]:n.controlChangeIds.hasOwnProperty(e)?t[n.controlChangeIds[e]]:void 0},set:function(t,e,r){return n.controlChangeIds.hasOwnProperty(e)?t[n.controlChangeIds[e]]=r:t[e]=r,!0}})}},54:function(t,e,r){"use strict";var n=this&&this.__spreadArray||function(t,e,r){if(r||2===arguments.length)for(var n,i=0,a=e.length;i<a;i++)!n&&i in e||(n||(n=Array.prototype.slice.call(e,0,i)),n[i]=e[i]);return t.concat(n||Array.prototype.slice.call(e))};Object.defineProperty(e,"__esModule",{value:!0}),e.encode=void 0;var i=r(289),a=r(535),o=r(507);function s(t,e){return{absoluteTime:t.ticks,channel:e,controllerType:t.number,deltaTime:0,type:"controller",value:Math.floor(127*t.value)}}function c(t){return{absoluteTime:0,channel:t.channel,deltaTime:0,programNumber:t.instrument.number,type:"programChange"}}e.encode=function(t){var e={header:{format:1,numTracks:t.tracks.length+1,ticksPerBeat:t.header.ppq},tracks:n([n(n(n(n([{absoluteTime:0,deltaTime:0,meta:!0,text:t.header.name,type:"trackName"}],t.header.keySignatures.map((function(t){return function(t){var e=a.keySignatureKeys.indexOf(t.key);return{absoluteTime:t.ticks,deltaTime:0,key:e+7,meta:!0,scale:"major"===t.scale?0:1,type:"keySignature"}}(t)})),!0),t.header.meta.map((function(t){return{absoluteTime:(e=t).ticks,deltaTime:0,meta:!0,text:e.text,type:e.type};var e})),!0),t.header.tempos.map((function(t){return function(t){return{absoluteTime:t.ticks,deltaTime:0,meta:!0,microsecondsPerBeat:Math.floor(6e7/t.bpm),type:"setTempo"}}(t)})),!0),t.header.timeSignatures.map((function(t){return function(t){return{absoluteTime:t.ticks,deltaTime:0,denominator:t.timeSignature[1],meta:!0,metronome:24,numerator:t.timeSignature[0],thirtyseconds:8,type:"timeSignature"}}(t)})),!0)],t.tracks.map((function(t){return n(n(n([(e=t.name,{absoluteTime:0,deltaTime:0,meta:!0,text:e,type:"trackName"}),c(t)],function(t){return(0,o.flatten)(t.notes.map((function(e){return function(t,e){return[{absoluteTime:t.ticks,channel:e,deltaTime:0,noteNumber:t.midi,type:"noteOn",velocity:Math.floor(127*t.velocity)},{absoluteTime:t.ticks+t.durationTicks,channel:e,deltaTime:0,noteNumber:t.midi,type:"noteOff",velocity:Math.floor(127*t.noteOffVelocity)}]}(e,t.channel)})))}(t),!0),function(t){for(var e=[],r=0;r<127;r++)t.controlChanges.hasOwnProperty(r)&&t.controlChanges[r].forEach((function(r){e.push(s(r,t.channel))}));return e}(t),!0),function(t){var e=[];return t.pitchBends.forEach((function(r){e.push(function(t,e){return{absoluteTime:t.ticks,channel:e,deltaTime:0,type:"pitchBend",value:t.value}}(r,t.channel))})),e}(t),!0);var e})),!0)};return e.tracks=e.tracks.map((function(t){t=t.sort((function(t,e){return t.absoluteTime-e.absoluteTime}));var e=0;return t.forEach((function(t){t.deltaTime=t.absoluteTime-e,e=t.absoluteTime,delete t.absoluteTime})),t.push({deltaTime:0,meta:!0,type:"endOfTrack"}),t})),new Uint8Array((0,i.writeMidi)(e))}},535:(t,e,r)=>{"use strict";Object.defineProperty(e,"__esModule",{value:!0}),e.Header=e.keySignatureKeys=void 0;var n=r(805),i=new WeakMap;e.keySignatureKeys=["Cb","Gb","Db","Ab","Eb","Bb","F","C","G","D","A","E","B","F#","C#"];var a=function(){function t(t){var r=this;if(this.tempos=[],this.timeSignatures=[],this.keySignatures=[],this.meta=[],this.name="",i.set(this,480),t){i.set(this,t.header.ticksPerBeat),t.tracks.forEach((function(t){t.forEach((function(t){t.meta&&("timeSignature"===t.type?r.timeSignatures.push({ticks:t.absoluteTime,timeSignature:[t.numerator,t.denominator]}):"setTempo"===t.type?r.tempos.push({bpm:6e7/t.microsecondsPerBeat,ticks:t.absoluteTime}):"keySignature"===t.type&&r.keySignatures.push({key:e.keySignatureKeys[t.key+7],scale:0===t.scale?"major":"minor",ticks:t.absoluteTime}))}))}));var n=0;t.tracks[0].forEach((function(t){n+=t.deltaTime,t.meta&&("trackName"===t.type?r.name=t.text:"text"!==t.type&&"cuePoint"!==t.type&&"marker"!==t.type&&"lyrics"!==t.type||r.meta.push({text:t.text,ticks:n,type:t.type}))})),this.update()}}return t.prototype.update=function(){var t=this,e=0,r=0;this.tempos.sort((function(t,e){return t.ticks-e.ticks})),this.tempos.forEach((function(n,i){var a=i>0?t.tempos[i-1].bpm:t.tempos[0].bpm,o=n.ticks/t.ppq-r,s=60/a*o;n.time=s+e,e=n.time,r+=o})),this.timeSignatures.sort((function(t,e){return t.ticks-e.ticks})),this.timeSignatures.forEach((function(e,r){var n=r>0?t.timeSignatures[r-1]:t.timeSignatures[0],i=(e.ticks-n.ticks)/t.ppq/n.timeSignature[0]/(n.timeSignature[1]/4);n.measures=n.measures||0,e.measures=i+n.measures}))},t.prototype.ticksToSeconds=function(t){var e=(0,n.search)(this.tempos,t);if(-1!==e){var r=this.tempos[e],i=r.time,a=(t-r.ticks)/this.ppq;return i+60/r.bpm*a}return t/this.ppq*.5},t.prototype.ticksToMeasures=function(t){var e=(0,n.search)(this.timeSignatures,t);if(-1!==e){var r=this.timeSignatures[e],i=(t-r.ticks)/this.ppq;return r.measures+i/(r.timeSignature[0]/r.timeSignature[1])/4}return t/this.ppq/4},Object.defineProperty(t.prototype,"ppq",{get:function(){return i.get(this)},enumerable:!1,configurable:!0}),t.prototype.secondsToTicks=function(t){var e=(0,n.search)(this.tempos,t,"time");if(-1!==e){var r=this.tempos[e],i=(t-r.time)/(60/r.bpm);return Math.round(r.ticks+i*this.ppq)}var a=t/.5;return Math.round(a*this.ppq)},t.prototype.toJSON=function(){return{keySignatures:this.keySignatures,meta:this.meta,name:this.name,ppq:this.ppq,tempos:this.tempos.map((function(t){return{bpm:t.bpm,ticks:t.ticks}})),timeSignatures:this.timeSignatures}},t.prototype.fromJSON=function(t){this.name=t.name,this.tempos=t.tempos.map((function(t){return Object.assign({},t)})),this.timeSignatures=t.timeSignatures.map((function(t){return Object.assign({},t)})),this.keySignatures=t.keySignatures.map((function(t){return Object.assign({},t)})),this.meta=t.meta.map((function(t){return Object.assign({},t)})),i.set(this,t.ppq),this.update()},t.prototype.setTempo=function(t){this.tempos=[{bpm:t,ticks:0}],this.update()},t}();e.Header=a},362:(t,e,r)=>{"use strict";Object.defineProperty(e,"__esModule",{value:!0}),e.Instrument=void 0;var n=r(438),i=new WeakMap,a=function(){function t(t,e){if(this.number=0,i.set(this,e),this.number=0,t){var r=t.find((function(t){return"programChange"===t.type}));r&&(this.number=r.programNumber)}}return Object.defineProperty(t.prototype,"name",{get:function(){return this.percussion?n.DrumKitByPatchID[this.number]:n.instrumentByPatchID[this.number]},set:function(t){var e=n.instrumentByPatchID.indexOf(t);-1!==e&&(this.number=e)},enumerable:!1,configurable:!0}),Object.defineProperty(t.prototype,"family",{get:function(){return this.percussion?"drums":n.InstrumentFamilyByID[Math.floor(this.number/8)]},enumerable:!1,configurable:!0}),Object.defineProperty(t.prototype,"percussion",{get:function(){return 9===i.get(this).channel},enumerable:!1,configurable:!0}),t.prototype.toJSON=function(){return{family:this.family,number:this.number,name:this.name}},t.prototype.fromJSON=function(t){this.number=t.number},t}();e.Instrument=a},438:(t,e)=>{"use strict";Object.defineProperty(e,"__esModule",{value:!0}),e.DrumKitByPatchID=e.InstrumentFamilyByID=e.instrumentByPatchID=void 0,e.instrumentByPatchID=["acoustic grand piano","bright acoustic piano","electric grand piano","honky-tonk piano","electric piano 1","electric piano 2","harpsichord","clavi","celesta","glockenspiel","music box","vibraphone","marimba","xylophone","tubular bells","dulcimer","drawbar organ","percussive organ","rock organ","church organ","reed organ","accordion","harmonica","tango accordion","acoustic guitar (nylon)","acoustic guitar (steel)","electric guitar (jazz)","electric guitar (clean)","electric guitar (muted)","overdriven guitar","distortion guitar","guitar harmonics","acoustic bass","electric bass (finger)","electric bass (pick)","fretless bass","slap bass 1","slap bass 2","synth bass 1","synth bass 2","violin","viola","cello","contrabass","tremolo strings","pizzicato strings","orchestral harp","timpani","string ensemble 1","string ensemble 2","synthstrings 1","synthstrings 2","choir aahs","voice oohs","synth voice","orchestra hit","trumpet","trombone","tuba","muted trumpet","french horn","brass section","synthbrass 1","synthbrass 2","soprano sax","alto sax","tenor sax","baritone sax","oboe","english horn","bassoon","clarinet","piccolo","flute","recorder","pan flute","blown bottle","shakuhachi","whistle","ocarina","lead 1 (square)","lead 2 (sawtooth)","lead 3 (calliope)","lead 4 (chiff)","lead 5 (charang)","lead 6 (voice)","lead 7 (fifths)","lead 8 (bass + lead)","pad 1 (new age)","pad 2 (warm)","pad 3 (polysynth)","pad 4 (choir)","pad 5 (bowed)","pad 6 (metallic)","pad 7 (halo)","pad 8 (sweep)","fx 1 (rain)","fx 2 (soundtrack)","fx 3 (crystal)","fx 4 (atmosphere)","fx 5 (brightness)","fx 6 (goblins)","fx 7 (echoes)","fx 8 (sci-fi)","sitar","banjo","shamisen","koto","kalimba","bag pipe","fiddle","shanai","tinkle bell","agogo","steel drums","woodblock","taiko drum","melodic tom","synth drum","reverse cymbal","guitar fret noise","breath noise","seashore","bird tweet","telephone ring","helicopter","applause","gunshot"],e.InstrumentFamilyByID=["piano","chromatic percussion","organ","guitar","bass","strings","ensemble","brass","reed","pipe","synth lead","synth pad","synth effects","world","percussive","sound effects"],e.DrumKitByPatchID={0:"standard kit",8:"room kit",16:"power kit",24:"electronic kit",25:"tr-808 kit",32:"jazz kit",40:"brush kit",48:"orchestra kit",56:"sound fx kit"}},233:function(t,e,r){"use strict";var n=this&&this.__awaiter||function(t,e,r,n){return new(r||(r=Promise))((function(i,a){function o(t){try{c(n.next(t))}catch(t){a(t)}}function s(t){try{c(n.throw(t))}catch(t){a(t)}}function c(t){var e;t.done?i(t.value):(e=t.value,e instanceof r?e:new r((function(t){t(e)}))).then(o,s)}c((n=n.apply(t,e||[])).next())}))},i=this&&this.__generator||function(t,e){var r,n,i,a,o={label:0,sent:function(){if(1&i[0])throw i[1];return i[1]},trys:[],ops:[]};return a={next:s(0),throw:s(1),return:s(2)},"function"==typeof Symbol&&(a[Symbol.iterator]=function(){return this}),a;function s(a){return function(s){return function(a){if(r)throw new TypeError("Generator is already executing.");for(;o;)try{if(r=1,n&&(i=2&a[0]?n.return:a[0]?n.throw||((i=n.return)&&i.call(n),0):n.next)&&!(i=i.call(n,a[1])).done)return i;switch(n=0,i&&(a=[2&a[0],i.value]),a[0]){case 0:case 1:i=a;break;case 4:return o.label++,{value:a[1],done:!1};case 5:o.label++,n=a[1],a=[0];continue;case 7:a=o.ops.pop(),o.trys.pop();continue;default:if(!((i=(i=o.trys).length>0&&i[i.length-1])||6!==a[0]&&2!==a[0])){o=0;continue}if(3===a[0]&&(!i||a[1]>i[0]&&a[1]<i[3])){o.label=a[1];break}if(6===a[0]&&o.label<i[1]){o.label=i[1],i=a;break}if(i&&o.label<i[2]){o.label=i[2],o.ops.push(a);break}i[2]&&o.ops.pop(),o.trys.pop();continue}a=e.call(t,o)}catch(t){a=[6,t],n=0}finally{r=i=0}if(5&a[0])throw a[1];return{value:a[0]?a[1]:void 0,done:!0}}([a,s])}}};Object.defineProperty(e,"__esModule",{value:!0}),e.Header=e.Track=e.Midi=void 0;var a=r(289),o=r(535),s=r(334),c=r(54),u=function(){function t(t){var e=this,r=null;if(t){var n=t instanceof ArrayBuffer?new Uint8Array(t):t;(r=(0,a.parseMidi)(n)).tracks.forEach((function(t){var e=0;t.forEach((function(t){e+=t.deltaTime,t.absoluteTime=e}))})),r.tracks=function(t){for(var e=[],r=0;r<t.length;r++)for(var n=e.length,i=new Map,a=Array(16).fill(0),o=0,s=t[r];o<s.length;o++){var c=s[o],u=n,h=c.channel;if(void 0!==h){"programChange"===c.type&&(a[h]=c.programNumber);var f=a[h],p="".concat(f," ").concat(h);i.has(p)?u=i.get(p):(u=n+i.size,i.set(p,u))}e[u]||e.push([]),e[u].push(c)}return e}(r.tracks)}this.header=new o.Header(r),this.tracks=[],t&&(this.tracks=r.tracks.map((function(t){return new s.Track(t,e.header)})),1===r.header.format&&0===this.tracks[0].duration&&this.tracks.shift())}return t.fromUrl=function(e){return n(this,void 0,void 0,(function(){var r;return i(this,(function(n){switch(n.label){case 0:return[4,fetch(e)];case 1:return(r=n.sent()).ok?[4,r.arrayBuffer()]:[3,3];case 2:return[2,new t(n.sent())];case 3:throw new Error("Could not load '".concat(e,"'"))}}))}))},Object.defineProperty(t.prototype,"name",{get:function(){return this.header.name},set:function(t){this.header.name=t},enumerable:!1,configurable:!0}),Object.defineProperty(t.prototype,"duration",{get:function(){var t=this.tracks.map((function(t){return t.duration}));return Math.max.apply(Math,t)},enumerable:!1,configurable:!0}),Object.defineProperty(t.prototype,"durationTicks",{get:function(){var t=this.tracks.map((function(t){return t.durationTicks}));return Math.max.apply(Math,t)},enumerable:!1,configurable:!0}),t.prototype.addTrack=function(){var t=new s.Track(void 0,this.header);return this.tracks.push(t),t},t.prototype.toArray=function(){return(0,c.encode)(this)},t.prototype.toJSON=function(){return{header:this.header.toJSON(),tracks:this.tracks.map((function(t){return t.toJSON()}))}},t.prototype.fromJSON=function(t){var e=this;this.header=new o.Header,this.header.fromJSON(t.header),this.tracks=t.tracks.map((function(t){var r=new s.Track(void 0,e.header);return r.fromJSON(t),r}))},t.prototype.clone=function(){var e=new t;return e.fromJSON(this.toJSON()),e},t}();e.Midi=u;var h=r(334);Object.defineProperty(e,"Track",{enumerable:!0,get:function(){return h.Track}});var f=r(535);Object.defineProperty(e,"Header",{enumerable:!0,get:function(){return f.Header}})},518:(t,e)=>{"use strict";function r(t){return["C","C#","D","D#","E","F","F#","G","G#","A","A#","B"][t%12]}Object.defineProperty(e,"__esModule",{value:!0}),e.Note=void 0;var n,i,a=(n=/^([a-g]{1}(?:b|#|x|bb)?)(-?[0-9]+)/i,i={cbb:-2,cb:-1,c:0,"c#":1,cx:2,dbb:0,db:1,d:2,"d#":3,dx:4,ebb:2,eb:3,e:4,"e#":5,ex:6,fbb:3,fb:4,f:5,"f#":6,fx:7,gbb:5,gb:6,g:7,"g#":8,gx:9,abb:7,ab:8,a:9,"a#":10,ax:11,bbb:9,bb:10,b:11,"b#":12,bx:13},function(t){var e=n.exec(t),r=e[1],a=e[2];return i[r.toLowerCase()]+12*(parseInt(a,10)+1)}),o=new WeakMap,s=function(){function t(t,e,r){o.set(this,r),this.midi=t.midi,this.velocity=t.velocity,this.noteOffVelocity=e.velocity,this.ticks=t.ticks,this.durationTicks=e.ticks-t.ticks}return Object.defineProperty(t.prototype,"name",{get:function(){return t=this.midi,e=Math.floor(t/12)-1,r(t)+e.toString();var t,e},set:function(t){this.midi=a(t)},enumerable:!1,configurable:!0}),Object.defineProperty(t.prototype,"octave",{get:function(){return Math.floor(this.midi/12)-1},set:function(t){var e=t-this.octave;this.midi+=12*e},enumerable:!1,configurable:!0}),Object.defineProperty(t.prototype,"pitch",{get:function(){return r(this.midi)},set:function(t){this.midi=12*(this.octave+1)+["C","C#","D","D#","E","F","F#","G","G#","A","A#","B"].indexOf(t)},enumerable:!1,configurable:!0}),Object.defineProperty(t.prototype,"duration",{get:function(){var t=o.get(this);return t.ticksToSeconds(this.ticks+this.durationTicks)-t.ticksToSeconds(this.ticks)},set:function(t){var e=o.get(this).secondsToTicks(this.time+t);this.durationTicks=e-this.ticks},enumerable:!1,configurable:!0}),Object.defineProperty(t.prototype,"time",{get:function(){return o.get(this).ticksToSeconds(this.ticks)},set:function(t){var e=o.get(this);this.ticks=e.secondsToTicks(t)},enumerable:!1,configurable:!0}),Object.defineProperty(t.prototype,"bars",{get:function(){return o.get(this).ticksToMeasures(this.ticks)},enumerable:!1,configurable:!0}),t.prototype.toJSON=function(){return{duration:this.duration,durationTicks:this.durationTicks,midi:this.midi,name:this.name,ticks:this.ticks,time:this.time,velocity:this.velocity}},t}();e.Note=s},882:(t,e)=>{"use strict";Object.defineProperty(e,"__esModule",{value:!0}),e.PitchBend=void 0;var r=new WeakMap,n=function(){function t(t,e){r.set(this,e),this.ticks=t.absoluteTime,this.value=t.value}return Object.defineProperty(t.prototype,"time",{get:function(){return r.get(this).ticksToSeconds(this.ticks)},set:function(t){var e=r.get(this);this.ticks=e.secondsToTicks(t)},enumerable:!1,configurable:!0}),t.prototype.toJSON=function(){return{ticks:this.ticks,time:this.time,value:this.value}},t}();e.PitchBend=n},334:(t,e,r)=>{"use strict";Object.defineProperty(e,"__esModule",{value:!0}),e.Track=void 0;var n=r(805),i=r(543),a=r(906),o=r(882),s=r(362),c=r(518),u=new WeakMap,h=function(){function t(t,e){var r=this;if(this.name="",this.notes=[],this.controlChanges=(0,a.createControlChanges)(),this.pitchBends=[],u.set(this,e),t){var n=t.find((function(t){return"trackName"===t.type}));this.name=n?n.text:""}if(this.instrument=new s.Instrument(t,this),this.channel=0,t){for(var i=t.filter((function(t){return"noteOn"===t.type})),o=t.filter((function(t){return"noteOff"===t.type})),c=function(){var t=i.shift();h.channel=t.channel;var e=o.findIndex((function(e){return e.noteNumber===t.noteNumber&&e.absoluteTime>=t.absoluteTime}));if(-1!==e){var r=o.splice(e,1)[0];h.addNote({durationTicks:r.absoluteTime-t.absoluteTime,midi:t.noteNumber,noteOffVelocity:r.velocity/127,ticks:t.absoluteTime,velocity:t.velocity/127})}},h=this;i.length;)c();t.filter((function(t){return"controller"===t.type})).forEach((function(t){r.addCC({number:t.controllerType,ticks:t.absoluteTime,value:t.value/127})})),t.filter((function(t){return"pitchBend"===t.type})).forEach((function(t){r.addPitchBend({ticks:t.absoluteTime,value:t.value/Math.pow(2,13)})}));var f=t.find((function(t){return"endOfTrack"===t.type}));this.endOfTrackTicks=void 0!==f?f.absoluteTime:void 0}}return t.prototype.addNote=function(t){var e=u.get(this),r=new c.Note({midi:0,ticks:0,velocity:1},{ticks:0,velocity:0},e);return Object.assign(r,t),(0,n.insert)(this.notes,r,"ticks"),this},t.prototype.addCC=function(t){var e=u.get(this),r=new i.ControlChange({controllerType:t.number},e);return delete t.number,Object.assign(r,t),Array.isArray(this.controlChanges[r.number])||(this.controlChanges[r.number]=[]),(0,n.insert)(this.controlChanges[r.number],r,"ticks"),this},t.prototype.addPitchBend=function(t){var e=u.get(this),r=new o.PitchBend({},e);return Object.assign(r,t),(0,n.insert)(this.pitchBends,r,"ticks"),this},Object.defineProperty(t.prototype,"duration",{get:function(){if(!this.notes.length)return 0;for(var t=this.notes[this.notes.length-1].time+this.notes[this.notes.length-1].duration,e=0;e<this.notes.length-1;e++){var r=this.notes[e].time+this.notes[e].duration;t<r&&(t=r)}return t},enumerable:!1,configurable:!0}),Object.defineProperty(t.prototype,"durationTicks",{get:function(){if(!this.notes.length)return 0;for(var t=this.notes[this.notes.length-1].ticks+this.notes[this.notes.length-1].durationTicks,e=0;e<this.notes.length-1;e++){var r=this.notes[e].ticks+this.notes[e].durationTicks;t<r&&(t=r)}return t},enumerable:!1,configurable:!0}),t.prototype.fromJSON=function(t){var e=this;for(var r in this.name=t.name,this.channel=t.channel,this.instrument=new s.Instrument(void 0,this),this.instrument.fromJSON(t.instrument),void 0!==t.endOfTrackTicks&&(this.endOfTrackTicks=t.endOfTrackTicks),t.controlChanges)t.controlChanges[r]&&t.controlChanges[r].forEach((function(t){e.addCC({number:t.number,ticks:t.ticks,value:t.value})}));t.notes.forEach((function(t){e.addNote({durationTicks:t.durationTicks,midi:t.midi,ticks:t.ticks,velocity:t.velocity})}))},t.prototype.toJSON=function(){for(var t={},e=0;e<127;e++)this.controlChanges.hasOwnProperty(e)&&(t[e]=this.controlChanges[e].map((function(t){return t.toJSON()})));var r={channel:this.channel,controlChanges:t,pitchBends:this.pitchBends.map((function(t){return t.toJSON()})),instrument:this.instrument.toJSON(),name:this.name,notes:this.notes.map((function(t){return t.toJSON()}))};return void 0!==this.endOfTrackTicks&&(r.endOfTrackTicks=this.endOfTrackTicks),r},t}();e.Track=h}},e={};function r(n){var i=e[n];if(void 0!==i)return i.exports;var a=e[n]={exports:{}};return t[n].call(a.exports,a,a.exports,r),a.exports}return r.d=(t,e)=>{for(var n in e)r.o(e,n)&&!r.o(t,n)&&Object.defineProperty(t,n,{enumerable:!0,get:e[n]})},r.o=(t,e)=>Object.prototype.hasOwnProperty.call(t,e),r.r=t=>{"undefined"!=typeof Symbol&&Symbol.toStringTag&&Object.defineProperty(t,Symbol.toStringTag,{value:"Module"}),Object.defineProperty(t,"__esModule",{value:!0})},r(233)})()}));
+//# sourceMappingURL=Midi.js.map
+`;
+
+(function (Scratch) {
+  class MidiParserExtension {
+    constructor(runtime) {
+      this.runtime = runtime;
+      this.notesData = [];
+      this.errorMessage = '';
+      this.loadMidiLibrary();
+    }
+
+    loadMidiLibrary() {
+      try {
+        const script = document.createElement('script');
+        script.textContent = MidiLibrary; // Embedded library code
+        document.head.appendChild(script);
+      } catch (error) {
+        this.errorMessage = 'Failed to load MIDI library: ' + error.message;
+      }
+    }
+
+    getInfo() {
+      return {
+        id: 'midiParser',
+        name: 'MIDI Parser',
+        color1: '#4C97FF',
+        color2: '#337BCC',
+        color3: '#2C6CA3',
+        blocks: [
+          {
+            opcode: 'parseMidiDataUrl',
+            blockType: Scratch.BlockType.REPORTER,
+            text: 'Parse MIDI Data URL [DATA_URL]',
+            arguments: {
+              DATA_URL: {
+                type: Scratch.ArgumentType.STRING,
+                defaultValue: ''
+              }
+            }
+          }
+        ]
+      };
+    }
+
+    parseMidiDataUrl(args) {
+      this.errorMessage = '';
+      if (!window.Midi) {
+        return 'MIDI library failed to load';
+      }
+
+      const dataUrl = args.DATA_URL.trim();
+      if (!dataUrl) {
+        return 'MIDI Data URL is empty';
+      }
+
+      try {
+        // Parse Data URL
+        const base64Data = dataUrl.split(',')[1];
+        if (!base64Data) {
+          throw new Error('Invalid Data URL format');
+        }
+
+        // Decode Base64 data to ArrayBuffer
+        const binaryString = atob(base64Data);
+        const len = binaryString.length;
+        const buffer = new ArrayBuffer(len);
+        const view = new Uint8Array(buffer);
+        for (let i = 0; i < len; i++) {
+          view[i] = binaryString.charCodeAt(i);
+        }
+
+        // Parse MIDI file
+        const midi = new window.Midi(buffer);
+
+        // Store note information
+        this.notesData = [];
+        midi.tracks.forEach((track, trackIndex) => {
+          track.notes.forEach(note => {
+            this.notesData.push({
+              track: trackIndex,
+              midiNumber: note.midi,
+              noteName: note.name,
+              startTime: note.time,
+              duration: note.duration,
+              velocity: note.velocity
+            });
+          });
+        });
+
+        this.notesData.sort((a, b) => a.startTime - b.startTime);
+        return JSON.stringify(this.notesData, null, 2);
+      } catch (error) {
+        return 'Error parsing MIDI file: ' + error.message;
+      }
+    }
+  }
+
+  // Register extension
+  Scratch.extensions.register(new MidiParserExtension());
+})(Scratch);
\ No newline at end of file
diff --git a/samples/Midi.sb3 b/samples/Midi.sb3
new file mode 100644
index 0000000000..c698d2a158
Binary files /dev/null and b/samples/Midi.sb3 differ