Synopsis: Inspired by the students, Will composes a mash-up for a very special occasion. Meanwhile, in a shocking reversal of roles, McKinley High's cool kids are dethroned in an "icy" fashion, and Sue shows off her softer side. Musical performances include "Bust a Move", "Thong Song", "Sweet Caroline" and "I Could Have Danced All Night".
Watch Glee Season 1 Episode 8: Mash-Up - Version 1
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