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GREASE: LIVE: (L-R): Keke Palmer, Vanessa Hudgens, Carlos PenaVega, Carly Rae Jespen, Aaron Tveit, David Del Rio, Jordan Fisher, Julianne Hough, Andrew Call and Kether Donohue in GREASE: LIVE airing LIVE Sunday, Jan. 31, 2016 (7:00-10:00 PM ET live/PT tape-delayed) on FOX. Cr: Tommy Garcia/FOX
GREASE: LIVE: (L-R): Keke Palmer, Vanessa Hudgens, Carlos PenaVega, Carly Rae Jespen, Aaron Tveit, David Del Rio, Jordan Fisher, Julianne Hough, Andrew Call and Kether Donohue in GREASE: LIVE airing LIVE Sunday, Jan. 31, 2016 (7:00-10:00 PM ET live/PT tape-delayed) on FOX. Cr: Tommy Garcia/FOX

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    A look inside the 'Grease: Live!' control room

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A look inside the 'Grease: Live!' control room

Watch epic shot-calling in the "Grease: Live!" control room. Count on CNN's Jeanne Moos for this counting choreography.

A look inside the 'Grease: Live!' control room

Watch epic shot-calling in the "Grease: Live!" control room. Count on CNN's Jeanne Moos for this counting choreography.