Are you thinking of self hosting, or signing up for a music service of some kind?
For self hosting there's #funkwhale, which has fediverse integration built in. I tried it myself and it didn't quite fit for me though.
A lot of musicians on here really like self hosting with #faircamp (and I use it myself and think it's great) but faircamp doesn't have activitypub, so there's no fediverse integration.
Binder