Unveiled at the I/O developer conference in San Francisco yesterday (May 11), Music Beta will initially be available to Google developers. Thereafter, it will move to invite-only beta, although Google did not provide a timeline for when this would be expected to happen.

The main features of the service are as follows:

• it will remain free while in its beta period, although no storage price points are given
• users can upload and store up to 20,000 tracks in their personal ...