ChordRipple

This web app is a search-box like interface for writing chord progressions. Just type in chord names, and you'll see its ripples propagate down the list of autocompletions. See substitutions, what's next, surrounding chords change, and continuations that lead you to the end of a phrase.

On a non-snowy day, you might be able to try it out at:

http://chordripplev3.iis-dev.seas.harvard.edu/

Earlier version (allows any number of chords):

https://chordripple.iis-dev.seas.harvard.edu

INSTALLATION

For Mac: (TODO: reduce some of these dependencies.)

pip install numpy
    pip install matplotlib
    pip install sklearn
    pip install scipy
    pip install pandas
    pip install elasticsearch
    pip install jsonpickle
pip install music21
pip install flask
pip install gevent-socketio

RUNNING

cd ChordRipple/app
python server.py

In local browser:

http://localhost:8088

Some other libraries used:

• http://twitter.github.com/bootstrap/
• https://github.com/mudcube/MIDI.js/
• https://github.com/kpdecker/jsdiff
• https://code.google.com/p/jcaret/
• https://github.com/HIPS/Kayak
• https://github.com/piskvorky/gensim/

REFERENCES

This app uses annotated data from

De Clercq, Trevor, and David Temperley. "A corpus analysis of rock harmony." Popular Music 30.01 (2011): 47-70.

The model is based on

Mikolov, T., Sutskever, I., Chen, K., Corrado, G., & Dean, J. (2013). Distributed Representations of Words and Phrases and their Compositionality. Advances in Neural Information Processing Systems, 26, 3111–3119.