Watch: All the Performances From Glee's Grease — Season 4, Episode 6: "Glease" (VIDEOS)

Glee took on the classic songs of Grease for Season 4, Episode 6: "Glease" — and we couldn't be more excited about the final result. Miss any of the great performances... or just want to watch them again? Now you can watch each of the songs from the night's episode right here.


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