Zune Pass is a paid music subscription service. It allows subscribers to listen to as much music as they want for a given month. At the end of the month users choose 10 songs to keep forever, and the process begins again the next month. You do not need a Zune device to take advantage of this service.

To signup just go to ZunePass.com. You can start with a free 14 day trial, but you will only get to keep songs if you roll over into a paid subscription.

You can cancel your subscription to Zune Pass by logging into your account and clicking "Cancel Subscription". Your current month's subscription will remain active until it's renewal date, so you don't lose any time you paid for when canceling.