Credit: Mike Yarish/FOX ©2011 Fox Broadcasting Co.

Between dancing cheerleaders with big dinosaur heads and swoon-tastic boy bands, the music from Glee Season 3, Episode 19: “Prom-asaurus” is not to be missed. Want to check out any of the songs again? Now you can re-watch each of the great performances.

Credit: Glee on Fox on YouTube Photo: Watch! Full Performance of Brittany Singing Ke$ha "Dinosaur" in Glee Season 3, Episode 19: "Prom-asaurus: (VIDEO)