Here's our pick of the most useful and interesting apps from Microsoft's Windows Phone 7 Marketplace hub
Developer: Shazam Entertainment Ltd
Formerly also on Windows Mobile, Shazam lets you use your phone's microphone to 'hear' a music track, even a song on a movie soundtrack. Shazam then identifies it almost instantly, and can link you to Microsoft's Zune music and media service for detailed info, purchase and download.
At this writing, there are about two dozen reviews of this app and 17 give it a 5-star rating. It's generally praised for performance, wealth of features, the clean Windows Phone 7 interface.
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