Music I'd is what AT&T has, go to your mobile apps browser, and look in the music apps, it may be there.
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The OP is a VZW customer, so I'm not thinking he has access to MusicID, but you're right, there may be an app in the Music Apps folder. Worth a shot. I'll gooooooooooooooooogle and report back.
It'll probably be in your "Applications" folder. May NOT be named "Music Applications" but if there is a music identifying application, it'd be there. The other poster was just giving you an example (MusicID for AT&T...). Still looking for your app on goooooooooooogle.