I believe it would have to be more the artists wanting to publish there music on the platform, as letting people ‘borrow’ your music will quickly get to a cease and desist. So it would be more of a platform for artists to be able to publish there music and podcasts that is open for anyone to create there own instance from the source code such as Mastodon does for the Micro-Bloggers, It would mean artists control there music but also can release it to the public to listen too, the only main problem I can see is money, the main thing I can see across the whole Fediverse is money tbh, like who pays for the servers and stuff, where do they get that money from and how does that effect the Fediverse. Really do hope we get a PeerTube like thing for Music but maybe in the future.