You could check @stemstr but they haven’t opened the gates yet.

There are people like nostr:npub1dy7zsvk7jwd547xvmpptzlc9muhd64g7txvf60zwlxjyj4aj78as6hljz5 involved into music making.

Do you play any instruments?

If you tap on that hashtag, music related posts will appear. So you'll get some mapping of what's going on in the realm of music on #Nostr.