STAGE TUBE: New HAIRSPRAY LIVE! Promo Video Featuring Jennifer Hudson

What the world needs now is Jennifer Hudson singing "I Know Where I've Been," and with this new promo featuring the Oscar winner, audiences can get a preview dose of the powerful anthem-check out the video!

NBC's HAIRSPRAY LIVE will air Wednesday, Dec. 7 at 8 p.m. ET/PT and will originate from Los Angeles. The all-star cast includes Harvey Fierstein as Edna Turnblad, Jennifer Hudson as Motormouth Mabel, Martin Short as Wilbur Turnblad, Derek Hough as Corny Collins, Ariana Grandeas Penny Pingleton, Andrea Martin as Prudy Pingleton and Kristin Chenoweth as Velma Von Tussle. Rosie O'Donnell and Sean Hayes will also make special appearances in the broadcast.

Live television director Alex Rudzinski will join director Kenny Leon ("The Wiz Live!"). Craig Zadanand Neil Meron (the upcoming "A Few Good Men Live!") serve as executive producers of "Hairspray Live!" Harvey Fierstein will provide a new teleplay and Jerry Mitchell ("Kinky Boots," "On Your Feet") will serve as choreographer for the live production with music and lyrics by Marc Shaiman and Scott Wittman ("Smash" and Broadway's upcoming "Charlie and the Chocolate Factory"). Derek McLane serves as set designer.

Based on the Tony Award-winning Broadway musical, "Hairspray Live!" takes place in 1962 Baltimore. Teenager Tracy Turnblad's dream is to dance on "The Corny Collins Show," a local TV program. When, against all odds, Tracy wins a role on the show, she becomes a celebrity overnight and meets a colorful array of characters, including the resident dreamboat, Link; the ambitious mean girl, Amber; an African-American boy she meets in detention, Seaweed; and his mother, Motormouth Maybelle, the owner of a local record store. Tracy's mother is the indomitable Edna Turnblad, and she eventually encourages Tracy on her campaign to integrate the all-white "Corny Collins Show."