Presenting: Glee's 300th Musical Performance!

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Glee celebrates a milestone on Tuesday night.

During the episode "Mash Off," Shelby's new all-female choir will take to the stage and do a lot more than merely mash-up two Adele singles; the group will perform the show's 300th musical number! That's almost as many songs as Sue Sylvester one-liners.

Watch Santana and Mercedes take the lead below, as Shelby looks on proudly and Will looks on in fear:

What else can fans expect on the episode? View the official trailer HERE to find out!

Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.

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Glee Season 3 Episode 6 Quotes

It's not personal Porcelain, it's politics.


I'm Sue Sylvester, I have a human heart and I approve this message.


Glee Season 3 Episode 6 Music

  Song Artist
Song Rumor Has It/Someone Like You Glee Cast
Hot for teacher Hot For Teacher Glee Cast iTunes
You and i 3 You And I Glee Cast iTunes