'Glee': Hear Gwyneth Paltrow cover Pharrell's 'Happy' | EW.com

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'Glee': Hear Gwyneth Paltrow cover Pharrell's hit 'Happy' for the 100th episode -- EXCLUSIVE

Thanks For Sharing Gwyneth Paltrow

(Jason Merritt/Getty Images)

Glee reaches the 100 episode milestone with Tuesday’s hour, fittingly titled “100.” To celebrate the occasion, guest-star Gwyneth Paltrow reprises her Emmy-winning role of substitute teacher Holly Holliday (Kristin Chenoweth and Chace Crawford also make appearances) and even gets to croon a cover of Pharrell’s Oscar-nominated hit “Happy.” EW has the exclusive first listen of her version below.

For more tunes, head to Gleethemusic.com. “Happy” will also be featured on the new album Glee: The Music Celebrating 100 Episodes.

Glee airs at 8pm on Fox.