Featuring the country's best a cappella groups performing popular songs like you've never heard them before. There's no lip-synching, backup bands or safety net. They'll be singing for America's vote, with the winner walking away with the ultimate prize - a Sony Music recording contract and $100,000.
Ended
The Sing-Off
December 14, 2009
December 17, 2014
5
28
English
Sony Pictures TelevisionTenth Planet ProductionsOutlaw Productions