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First Listen! Heather Morris's Brittany Sings Ke$ha's "Dinosaur" in Glee Season 3, Episode 19: "Prom-asaurs" (VIDEO)

That's right: Brittany (Heather Morris) is singing Ke$ha again! This time, she's performing "Dinosaur" — with T Rex-headed Cheerios as her backup dancers — at McKinley High's senior class prom. Take a listen to this full song from Season 3, Episode 19: “Prom-asaurus.” 

Original airdate: Tuesday, May 8, 2012 at 8pm on Fox



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