[nikisweeting]

I did a similar deep dive to find all the specifically Music-related APIs that are available a few years ago. I've since moved on to other projects but maybe someone will find it useful / maybe OP can add the entries in my list to FreePublicAPIs.com!

https://docs.sweeting.me/s/music-apis

[gotopik]

I'm not OP but I am the dude who made freepublicapis.com. Will check it out for sure, thank you so much!