Rachel performs on Glee. "A Katy or a Gaga" is the fourth episode of the show's fifth season.
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Blaine's obviously more of a Gaga on Glee. "A Katy or a Gaga" is the fourth episode of the show's fifth season.
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Artie performs with wings on Glee. "A Katy or a Gaga" is the fourth episode of the show's fifth season.
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Becky watches a performance in costume on Glee. "A Katy or a Gaga" is the fourth episode of the show's fifth season.
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Sam performs a number with wings on Glee. "A Katy or a Gaga" is the fourth episode of the show's fifth season.
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Sam directs the newest performance on Glee. "A Katy or a Gaga" is the fourth episode of the show's fifth season.
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Ryder, Artie, Blaine, and Marley are directed during a new performance on Glee. "A Katy or a Gaga" is the fourth episode of the show's fifth season.
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Adam Lambert guest stars as Eliot Starchild on Glee. "A Katy or a Gaga" is the fourth episode of the show's fifth season.
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Glee Quotes

Rachel: This is what I wanted!
Sam: No, what you wanted was a second chance to get it right and Carmen just gave it to you. If you throw all that away you're going to be making the same mistake all over again

I'm gonna miss all of you. I love you guys.

Puck