I was just invited to Google Music Beta. I have only been using it for a few minutes now on my PC. I am happy to say the ever generous Google gives you a bunch of free songs based on genres that you select. You can choose to not accept the free tunes if you don’t want to interrupt your music snobbery.
I have not used it on my my devices yet as It is not available on my Phone(Galaxy S) and my tablet is at home.
With the PC version I can not find an option to download any of the music, but there is supposed to an option on an android device that allows you to store the music locally.
More to come