Check this video out. Quite amazing.
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How about these guys.
Show me five girls on one flute covering Spinal Tap's "Lick My Love Pump" and I'll be impressed ;-]

Actually, both videos linked here are great fun. Thanks.
Two guys playing piano HERE

Yes amazing...
07-21-12: Davehrab
Two guys playing piano HERE

LMAO!! Trust you Dave to find such piano playing "expertise"!! ;-)
This has been around for a while but it still gets me. You never know what you'll see at a sixth grade talent show. You gotta watch the girls reactions as they realize what the kid is singing.