How to: Music and Sound
* [Coltrane](https://github.com/pedrozath/coltrane) - A music theory library with a command-line interface.
* [Maestro](https://github.com/smashingboxes/maestro) - A Slack-Powered music bot for Spotify
* [Sonic Pi](https://github.com/samaaron/sonic-pi) - A live coding synth for everyone originally designed to support computing and music lessons.