NBC's 'The Sing-Off' Renewed for Fifth Round (Exclusive)

The Sing-Off Acoustikats H 2013

The Sing-Off Acoustikats H 2013

NBC is bringing back The Sing-Off.

The singing competition series will return for a fifth cycle, The Hollywood Reporter has learned.

The a cappella competition show from Sony Pictures Television and Mark Burnett's One Three Media will return as a holiday event. It's unclear how many episodes will be produced or what the airdate pattern will be. Casting for season five is currently underway.

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NBC renewed The Sing-Off for a fourth season in 2013 — after the show had been off the air for nearly a year and a half. The network broadcast the series last year as a seven-night event, similar to its original broadcast pattern before the series briefly switched to a weekly series in 2011. Season four ended with a record low for the franchise, with 5.2 million total viewers and a 1.3 among adults 18-49 when it aired on the day before Christmas Eve last year.

It's unclear which, if any, of season four's judges and hosts will be back. Season four featured the returns of Nick Lachey, Shawn Stockman and Ben Folds with Jewel replacing Sara Bareilles.

The return of The Sing-Off comes as NBC also has high-profile live musical Peter Pan in the works for a Dec. 4 broadcast.