# Tangle > Tangle is a music app for DJs and collectors: one collection across Spotify, Tidal, SoundCloud, YouTube Music, Apple Music, Bandcamp, Discogs, Rekordbox and local folders. ## Developers - [Tangle API instructions for agents](https://www.tangle.music/developers/agents.md): setup, rules, what Tangle supports, and recipes. Start here. - [Developer docs](https://www.tangle.music/developers/docs/): the same guide for people. - [Open Music Collection Access](https://www.tangle.music/omc/modules/access/): the protocol the Tangle API implements at https://api.tangle.music/omc/v1, with every endpoint. - [Open Music Collection Core](https://www.tangle.music/omc/spec/): the open standard for the records it serves. - [What belongs where](https://www.tangle.music/omc/spec/where/): what is Open Music Collection, what each home chooses, and what is Tangle's own. - [OAuth discovery](https://api.tangle.music/.well-known/oauth-authorization-server): authorization server metadata (RFC 8414). ## Product - [Tangle](https://www.tangle.music/): what Tangle is. - [FAQ](https://www.tangle.music/faq/)