Bop.fm (YC S13) Raised $2M for a Universal Music Streaming Service
businessinsider.com
businessinsider.com
However, like anything associated with the music industry, I'll take a wait and see approach to using it. I see no point in jumping on the latest thing if it's going to a) be sued out of existence, or b) sell out and get rolled into a company I don't like. Partnering with the other services seems like a good step towards avoiding bad-result a, so that's a promising sign.
The question left then is whether these folks are in it for the long haul, or if they're just in it for an "exit".
A better term would be a streaming service aggregator, perhaps?