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Regarding the "Music Theory library" aspect, note that the CLI tool demonstrates use of the underlying Ruby library which has documentation here:
* https://github.com/pedrozath/coltrane/wiki/Core-music-theory...
Additionally, the author wrote a post about the motivation for creating the library but it's a little difficult to find via the (now broken) link in the README, so here is a direct link to the archived page on the Wayback Machine:
* https://web.archive.org/web/20170714063625/https://medium.co...
If anyone is interested in a similar music theory library for Javascript[0] I've had some success with this:
* Tonal / Tonal.js https://github.com/tonaljs/tonal
[0] Or, in a pinch, even with a Godot 4 web export as I did for my (very incomplete) "AI and Games" Game Jam entry: https://rancidbacon.itch.io/the-conductor (For reasons far too convoluted to go into now.)
Looks awesome, love the tab view.
If there other hackers who make music here, I wrote this:
https://github.com/Miserlou/chords2midi
for writing chord progressions on the command line. I use it for building progressions which I drag into my DAW. It has voice leading, which required me translating an algorithm from 18th century German musical textbook into Python. I don't speak German and there were no unit tests in the 1700s so I'm only fairly certain that it works properly.
I will make a plugin version once ableton supports CLAP.
My text-based music sequencer has some music theory support and it also has a REPL:
https://github.com/flipcoder/textbeat
Curiously enough, I have been working on a project named after the same person (John Coltrane) as a way to help me practice music: https://github.com/trane-project/trane/
I have been meaning to generate flashcards to teach you the notes of scales and chords so that I can have instant recall. It gets really annoying to not know them when improvising or composing. I have some basic courses, but I found the process a bit tedious, so I have been working on other courses and features instead.
I am going to try to use this utility to help me generate the flashcards instead of writing my own logic. Hopefully it works well as it would save me a lot of time.
Regarding the "Music Theory library" aspect, note that the CLI tool demonstrates use of the underlying Ruby library which has documentation here:
* https://github.com/pedrozath/coltrane/wiki/Core-music-theory...
Additionally, the author wrote a post about the motivation for creating the library but it's a little difficult to find via the (now broken) link in the README, so here is a direct link to the archived page on the Wayback Machine:
* https://web.archive.org/web/20170714063625/https://medium.co...
If anyone is interested in a similar music theory library for Javascript[0] I've had some success with this:
* Tonal / Tonal.js https://github.com/tonaljs/tonal
[0] Or, in a pinch, even with a Godot 4 web export as I did for my (very incomplete) "AI and Games" Game Jam entry: https://rancidbacon.itch.io/the-conductor (For reasons far too convoluted to go into now.)
> abstracts certain music related objects (scales, chords)
I've been thinking about that again recently & attempting to resist both creating such an abstraction and re-inventing the wheel. :)
The first format that came to mind for its cross-language potential was essentially "Music Theory expressed in JSON format".
Yesterday I did another search for what current options there might be and after a very circuitous path ended up on an old version of the Tonal Javascript library I've already been using. :D
Specifically:
* https://github.com/Cycling74/node-music-theory/blob/518babe7...
* https://github.com/Cycling74/node-music-theory/blob/518babe7...
But the next abstraction level of associated "operations" (as documented by e.g. https://github.com/Cycling74/node-music-theory/blob/518babe7...) are still expressed in Javascript.
My impression is that there are a few tensions that complicate the creation of a "universal" cross-language/tool solution:
* Static vs dynamic storage/representation. e.g. Do you statically store the set of notes in a scale or store the intervals & the operation(s) needed to generate the result dynamically? e.g. https://github.com/Cycling74/node-music-theory/blob/518babe7...
* Reuse vs reinvention (time taken): When starting out it seems the amount of Music Theory most people want to use & have encoded is quite small. So initially the time required to "re-invent the wheel" is quite small vs time required to find & use a common shared abstraction.
* Reuse vs reinvention (knowledge gained): I know, for me, part of the motivation related to re-inventing the wheel is I also want to learn aspects Music Theory so I can understand/apply the knowledge in potentially non-programmatic contexts also.
I do think there is value in having the knowledge encoded in some manner so it's at least available for re-use for those who want it.