with 1 episodes premiered on December 5, 2011

with 4 episodes premiered on December 14, 2009

The first season of The Sing-Off premiered on December 14, 2009. The show featured eight a cappella groups performing popular songs live. The winner's prize was $100,000 and a Sony Music recording co… see more

with 5 episodes premiered on December 6, 2010

The second season of The Sing-Off premiered on December 6, 2010. The number of a cappella groups was increased from 8 to 10, with all acts coming from the United States. Nick Lachey was kept as host … see more

with 11 episodes premiered on September 19, 2011

The third season of The Sing-Off premiered on September 19, 2011. The number of a cappella groups was increased from 10 to 16, resulting in a new format. The show created two brackets, with only half… see more

with 7 episodes premiered on December 9, 2013

The fourth season of The Sing-Off returned with the number of a cappella groups competing decreased from sixteen back to ten, resulting in a new format. Nick Lachey remained as host for the new seaso… see more

with 1 episodes premiered on December 17, 2014