NBC has revealed the identities of the eight a cappella groups who will compete on The Sing-Off and also announced Nick Lachey will host the four-night reality singing competition, which will premiere Monday, December 14 at 8PM ET/PT.

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Following its debut, new two-hour The Sing-Off episodes will air on the next two nights in the Tuesday and Wednesday at 8PM ET/PT timeslot before its finale airs live on Monday, December 21 at 8PM ET/PT.

The Sing-Off will begin with the eight a cappella groups performing contemporary songs without the use of any backing tracks or instruments.

The performances will be critiqued by singer Ben Folds, Boyz II Men member Shawn Stockham, and a rotating guest judge who will be announced each night.

Home viewer votes cast following the broadcasts will determine which group receives the show's grand prize of $100,000 and an Epic Records/Sony Music recording contract.

The a cappella groups competing on The Sing-Off are Beelzebubs from Boston, MA, Noteworthy from Provo, UT, Face from Boulder, CO, Maxx Factor from Baltimore, MD, Nota from San Juan, PR, The SoCals from Los Angeles, CA, Solo from Omaha, NE, and Voices of Lee from Cleveland, TN.

NBC ordered The Sing-Off in March and it is being produced by Outlaw Entertainment, Tenth Planet Productions and Sony Pictures Television, with Joel Gallen, Deb Newmyer and Sam Weisman serving as executive producers.

Lachey saw his hometown choir from Cincinnati, OH win NBC's Clash of the Choirs December 2007 reality series, which featured celebrity-organized choirs from across the country competing against one another for home viewer votes.

The show's $250,000 grand prize was donated to the Cincinnati Children's Hospital Medical Center.
About The Author: Christopher Rocchio
Christopher Rocchio is an entertainment reporter for Reality TV World and has covered the reality TV genre for several years.