<li>Audio<ul>

<li><a href="https://github.com/beetbox/audioread">audioread</a> - Cross-library (GStreamer + Core Audio + MAD + FFmpeg) audio decoding.</li>

<li><a href="https://github.com/worldveil/dejavu">dejavu</a> - Audio fingerprinting and recognition.</li>

<li><a href="https://github.com/librosa/librosa">librosa</a> - Python library for audio and music analysis</li>

<li><a href="https://github.com/sergree/matchering">matchering</a> - A library for automated reference audio mastering.</li>

<li><a href="http://bspaans.github.io/python-mingus/">mingus</a> - An advanced music theory and notation package with MIDI file and playback support.</li>