...and it continues to grow. The Marketplace just added the free (and very popular) Shazam music ID app to its catalog.
The app promises to ID any song you throw at it just by pointing your phone at the music source and giving a few seconds. The software has been around for awhile now, first appearing on T-Mobile Windows Mobile devices as MusicID (remember that?) then after being ripped numerous times, they finally went public as Shazam. That version is available to current Windows Mobile users (see our Midomi review as an alternate)
This adds yet another feather in the media cap of Windows Phone 7 (see others here), even before launch. As a special "launch offer", they're offering free, unlimited 'tags'. Lets just hope the launch offer lasts long enough till we get some phones in our hands!