As expected, T-Mobile today launched its ringback service called CallerTunes. This is a national launch, making T-Mobile the first national cell phone carrier to provide ring back service throughout the network.

As a CallerTunes subscriber, you can select audio clips for the people calling you to hear before you answer the phone — whether it’s for specific individuals, groups of friends, or at specific times of the day

The cost for the service is a $1.49 monthly subscription fee, and a one-time charge of $1.99 for each CallerTune. Currently you can score a month of free service and a free tone from Alicia Keys .