I've got plans to build my own "open music API" that'll make whatever service you use just an adaptor that Rad can tap into. At the moment Radiant is very embedded in Spotify's API ecosystem due to a few key features none of the other services has.

Longer term thing sadly as this is very much my side deal but it'll get there.

Probably make that new API and dataset OSS as I want other devs to build cool stuff without being at the mercy of the streaming services.