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1 definition by blahblahblah12344

A twelve year old music genius. Became very popular on the web in a very short space of time after performing Lady GaGa's "Paparazzi". It's freakin spectacular.
Some people think he's the next Justin Bieber.
"Omg Justin bieber's so hot!"
"Justin who? Greyson Chance babyy!"
by blahblahblah12344 May 13, 2010
303 151