Google announced an improved Music Manager with new features that allows users to download their purchased music as well as uploaded music. Your music is still accessible from the cloud and you can stream it to your Android devices when you want.
Google Music previously allowed full plays of the purchased music to be shared with Google+ circles, now it integrated YouTube also, with the new option users can now share YouTube videos of the music they purchased with their Google+ friends, if that music video is available on YouTube.
To download just click the triangle next to a song or more and select “Download Selected Songs”. The downloaded songs are 320kbps mp3s.