A python package for handling multi-track piano-rolls.

• handle piano-rolls of multiple tracks with metadata
• utilities for manipulating piano-rolls
• save to and load from .npz files using efficient sparse matrix format
• parse from and write to MIDI files

To install Pypianoroll from PYPI:

$ pip install pypianoroll

To install Pypianoroll manually (please download the source code from either PYPI or Github first):

$ python setup.py install

Please cite the following paper if you use Pypianoroll in a published work:

Hao-Wen Dong, Wen-Yi Hsiao, Li-Chia Yang and Yi-Hsuan Yang, "MuseGAN: Multi-track Sequential Generative Adversarial Networks for Symbolic Music Generation and Accompaniment," in AAAI Conference on Artificial Intelligence (AAAI), 2018.