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It's the beginning of the end for "Glee" and it looks like Lea Michele is ready to "Let It Go" -- literally! The Fox musical comedy is premiering its farewell season tonight, closing the chapter on the high school glee club of underdogs and outcasts cheered on by viewers for the past five years, and it kicks off with Lea covering Frozen's most important song.

Friday's premiere will see the return of the original cast, with the notable absence of one of its breakout stars Cory Monteith, who passed away from a drug overdose in July 2013.  The series picks back up after a significant time jump.  Lea Michele's character Rachel Berry returns to McKinley High School in Lima, Ohio after a failed attempt at stardom in Hollywood, and takes on the mission of reviving the glee club to its former glory.  "Glee" returns Friday night on Fox starting at 8 p.m. Eastern. 

Watch Lea Michele singing "Let It Go" below!