Tell Google Now that you want to hear some music and it will oblige13
If you're a subscriber to Google Play Music All Access, the playlist of the station will be a wide selection of tunes based on your recent listening habits. If you're not a subscriber to All Access, the songlist for your radio station will be based on songs that you've downloaded on the music app on your phone. If you are interested in All Access, the service costs $9.99 per month.
So now Android users can quickly turn on their camera, video camera, and listen to music with a simple command to Google Now. What feature will be next?
source: +Google via AndroidCentral