5 Season
28 Episode
The Sing-Off - Season 4
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.
- Country : United States of America
- Genre : Reality
- Director :
- Cast : Shawn Stockman, Nick Lachey, Patrick Stump, Jewel