Google's Music Beta also lets people access their personal music collections from any Web connected PC or mobile device powered by Google's Android software.
To use the service, people must upload their digital music files from their personal computers to the Music Beta locker. On Google music you can get tracks from artists on Universal Music Group, Sony Music Entertainment, EMI, and the global independent rights agency Merlin as well as over 1,000 prominent independent labels.
Here is a quick tour video of recently launched Google Music..
Google Music is all about discovering, purchasing, sharing and enjoying digital music in new, innovative and personalized ways.
P.S. Check out some free online web music here..