"No wires, no painful syncing -- it's all just available instantly," Google Product Manager Paul Joyce explained during Tuesday's event.

Google is treating Google Music as a beta service to start, so you have to to get on-board. The beta is open to U.S. users only so far, though Google says it hopes to have the service available everywhere eventually.

On a computer, you don't need anything other than your browser; you just go to to get the whole shebang. From an Android phone or tablet, you can use the official Google Music app for a three-dimensional interface that'll handle both your cloud-stored songs and any music saved locally on your device.