The is a prototype app that takes in a user uploaded midi file containing a melody, generates a string quartet arrangement of it, and outputs a PDF sheet music of that arrangement.
The model is powered by the Magenta-Coconet counterpoint by convolution model developed by Google Brain. The midi melody file is parsed by Music21 developed by the Cuthbert Lab at MIT. Conversion to PDF is via Lilypond, the GNU music engraving package.
This app is currently under active development. License information in located in COPYING.