Funkwhale brings music and audio to the Fediverse:
It lets you discover, store and share music or other audio.
The official website has more:
Funkwhale is a federated, decentralised platform running on open software, and uses ActivityPub so it is also compatible with Mastodon and other Fediverse networks.
Fosstodon is an English speaking Mastodon instance that is open to anyone who is interested in technology; particularly free & open source software.