NBC has released what they call unseen footage of the auditions for Hairspray Live!, which will be broadcast live from Los Angeles December 7. Watch them above.

Hairspray Live! has also released its first trailer, featuring newcomer Maddie Baillio and original Tony Award-winning star Harvey Fierstein. Watch it here.

The musical event will be filmed live at the Universal Studios lots in Los Angeles, CA.

The cast also features Kristin Chenoweth as Velma Von Tussle, Andrea Martin as Prudy Pingleton, Ariana Grande as Penny Pingleton, Ephraim Sykes as Seaweed J. Stubbs, Shahadi Wright Joseph as Little Inez, Sean Hayes as Mr. Pinky, Rosie O’Donnell as the gym teacher, Paul Vogt as Mr. Spritzer, Derek Hough as Corny Collins, Garrett Clayton as Link Larkin, Martin Short as Wilbur Turnblad, and Oscar winner Jennifer Hudson as Motormouth Maybelle.

Fierstein has written the teleplay for the new adaptation, and original choreographer Jerry Mitchell serves as choreographer for the live production with music and lyrics by Marc Shaiman and Scott Wittman. Kenny Leon directs alongside Alex Rudzinski as live television director.

As previously reported, cast members Grande and Hudson will duet on the show’s finale, “Come So Far (Got So Far To Go).” Read MUSICAL NUMBERS FOR HAIRSPRAY LIVE! REVEALED

A half-hour before the December 7 live broadcast, cast members (and Promises, Promises co-stars) Kristin Chenoweth and Sean Hayes will host a half-hour pre-show.

Click here to read more about Hairspray’s live audience—how it will function and how to get in.