It has been rumored that Google will announce a cloud music offering at the Google I/O conference on Tuesday.
It seems that the live beta of Google Music has already leaked online.
You can visit Google's Music Beta page and sign in using your Gmail or Google profile credentials. There's not much you can do yet, but you can request an invitation for when the service is up and running.
Check out a screenshot of the service (below).
[UPDATE:] Google has announced that the service will be invite-only for U.S. users and will be free while it's still in beta.
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