March 14, 2013
It appears that NBC has decided to bring back The Sing-Off for a fourth season. A 2013 casting website has been launched at www.singoffcasting.com, which confirms the show's return. The website lists four audition dates starting next month in Chicago and continuing through May where it will also hit Nashville, Los Angeles, and New York.
The a cappella singing competition was previously thought to be cancelled after being left off the network's schedule for all of 2012. The show's third season concluded back in November 2011.