Gather ideas from existing libraries in other languages

[daveyarwood]

Examples from the JS world:
https://github.com/saebekassebil/teoria
https://github.com/stevekinney/octavian

[warriorpostman]

I recently have been playing around with another (newer?) JS library called tonaljs. It's pretty nice, I've been using it to grab the steps for building musical modes on the fly.