VIDEO: Watch Full Performance of Lea Michele Singing 'Let It Go' on GLEE Season Premiere

Below, watch the full-length performance of Lea Michele singing "Let It Go" on the GLEE Season Premiere before it airs on tomorrow night's two-hour Season Premiere of GLEE!

On the all-new two-hour Season Premiere of GLEE airing Friday, January 9th on FOX, after Rachel's (Lea Michele) humiliating failure as TV actress, she comes home to Lima to figure out what she wants to do next. Upon discovering that Sue (Jane Lynch) has banished the arts at McKinley, Rachel takes it upon herself to reinstate and lead the GLEE club. Meanwhile, Blaine (Darren Criss), no longer in a relationship with Kurt (Chris Colfer), has moved home to coach the Warblers while Will (Matthew Morrison) is coaching rival Vocal Adrenaline, and Sam (Chord Overstreet) is the assistant coach for the McKinley football team.

Then Puck (Mark Salling), Quinn (Dianna Agron), Santana (Naya Rivera), Mercedes (Amber Riley), Brittany (Heather Morris), Artie (Kevin McHale) and Tina (Jenna Ushkowitz) all return to McKinley for Homecoming and help Rachel and Kurt recruit for the new GLEE club in the all-new, special two-hour "Loser Like Me/Homecoming" Season Premiere episode of GLEE airing Friday, Jan. 9 (8:00-10:00 PM ET/PT) on FOX.