The Sing-Off

The Sing-Off was a singing a capella competition game show.

Broadcast
NBC 2009-2011

Packagers
Tenth Planet Productions

Outlaw Productions

Sony Pictures Television

Host
Nick Lachey

Judges
Ben Folds

Shawn Stockman

Nicole Scherzinger (2009–2010)

Sara Bareilles (2011)

Gameplay
A cappella groups from the United States, including Puerto Rico, are chosen by audition and advanced in the competition based on judges' eliminations until the finale, with the winners being determined by viewer votes.