Teenage Dream. Glee or Original?

There are so many songs on Glee and I want to show you one of the songs I like most. It's Teenage Dream by Katy Perry. It's the second single of her album "Teenage Dream" and I think it's so great. And I also think that Glee's version is as great as the original. The main difference is the singer. The original singer is a girl and the Glee's version is sung by a man. Let me show you these two great videos!

KATY PERRY'S VERSION

GLEE'S VERSION