Okay, I'm definitely going to check this out. Can't tell you how many times I've had a song stuck in my head (or worse, just a part of it!) but could not figure out what it was. Unfortunately, not sure if this app will account for my horrible understanding of song lyrics - I once thought the lyrics for that AC/DC song were "Dirty deeds Thun-der Chief!", instead of "Dirty deeds done dirt cheap!" ...til' someone busted me about 15 years later.