NBC Announces Special Holiday Episode of THE SING-OFF, 12/5

NBC has announced that its hit a capella singing competition, THE SING-OFF, is expanding its season with an additional holiday themed live episode, "A Sing-Off Christmas," on Monday, December 5 (8-10 p.m. ET) featuring groups from all three seasons including season two winners Committed, season one winners Nota, The Backbeats, Beelzebubs, On the Rocks, Street Corner Symphony and many of the top ten groups from season three.

This all-star episode will include performances of holiday and inspirational classics with special guest Flo Rida performing his smash hit and current Billboard Top 10 single "Good Feeling." All three judges will perform on "The Sing-Off" stage, with Sara Bareilles and Ben Folds tackling a holiday duet while Shawn Stockman takes on a Christmas classic with previous winners Nota.

THE SING-OFF is the unique competition series that sings a different tune and is hosted by multi-platinum recording artist Nick Lachey. The show scours the country in search of the best a capella groups, ranging in size and age. This year the competition has expanded to the 16 very best groups who will perform popular songs in a weekly competition that will culminate with a live finale revealing the grand-prize winner. The groups will be competing for America's vote and a chance to walk away with the ultimate prize - a Sony Music recording contract and a $200,000 cash prize.

There's no lip-synching, back-up bands or safety net. One group will be eliminated each week during this one-of-a-kind battle of voices that will lead up to a live finale - where viewers will decide the winner.