Lastream combines power of last.fm artist database with Apple Music. You dont need to care anymore about creating playlists. Just pick an artist or a tag and the app will generate for you a never ending station of similar performers. Or just listen to your last.fm library.
Lastream has scrobbling to last.fm embedded with no need to add music to your library.
Having last.fm profile is recommend but not necessary to use the app.
This is the very begging. A lot more stations and features are coming in soon.