SoundCloud

With SoundCloud API you can build applications that will give more power to control your content

Official docs outline

Extra Credit builds an outline of SoundCloud's docs the first time your work uses it. Until then, start at the official documentation.

Openwhyd Download curated playlists of streaming tracks (YouTube, SoundCloud, etc...)
Phishin A web-based archive of legal live audio recordings of the improvisational rock band Phish
Radio Browser List of internet radio stations
Songkick Music Events
Songlink / Odesli Get all the services on which a song is available
Songsterr Provides guitar, bass and drums tabs and chords
StemConsole Split songs into vocals, drums, bass and other stems with AI
Sunor AI music generation API via Suno, with pay-as-you-go credits
TasteDive Similar artist API (also works for movies and TV shows)
TheAudioDB Music
Vagalume Crowdsourced lyrics and music knowledge
Verome Music API for searching, streaming and exploring music data from YouTube Music, YouTube, and Last.fm