> Integration with Third Party Services. You shall not create any product or service by integrating the Spotify Platform, Spotify Service, or Spotify Content with (i) any non-interactive internet webcasting service or (ii) with streams from another service.
> you SHALL NOT [...] locally store, cache, and/or aggregate any data, including audio content, obtained through the Beats Music APIs.
I was worried about how my new side project[1] might be viewed to breach these terms, but these guys are taking the piss. Is it a case of why ask for permission when you can ask for forgiveness? Is that how it got past the Y Combinator people?
[0]: https://developer.beatsmusic.com/tos [1]: https://match.audio
However, thankfully we have agreements and relationships in place with all the music services that enable us to do what we do. This is because we serve as a marketing channel for the music services, helping them acquire new subscribers in ways they can't do easily themselves.
EDIT: Applies to all of our partnered music services.