Have you tried LNBeats.com ?

That would be cool. There’s @Wavlake but it’s streaming. Still very cool service and integrated with nostr. Would be cool if artists could also offer stuff/merch for sale, offer track and album downloads, etc.

Yeah. I'm thinking about how to keep the spirit of decentralization too and come up with a scheme where not all the music is stored on one server. Tho it has to be hosted somewhere and an incentive to keep it hosted.