Google just updated its official iOS and Android YouTube apps with a new tab called "Music", in line with the Key streaming service it just announced. The sole purpose of the new YouTube app homepage is to throw mixes based on your listening history and preferences to infinity, and we have to say that it works pretty well, because, well, YouTube, there's everything there.
There are also playlists recommendations, both based on your listening habits, and the trendy ones that are currently populating the tube charts. Tying this up with the new "Music Key" subscription service will bring you offline music, full albums, and ad-free music playback. The service is still in beta, though, so you need an invitation. YouTube's Spotify killer will be $7.99 a month for the initial subscribers, and then will default to $9.99. If you manage to score an invitation for the beta, though, the first six months are free.
source: YouTube (Google Play)