NBC's 'The Sing-Off' Renewed for Fifth Round

The Sing Off, 2013.
Chelsea Lauren/WireImage

Rob Lundquist, Austin Brown and Tim Foust of Home Free perform at 'The Sing-Off' Live Tour! at House of Blues Sunset Strip on March 29, 2014 in West Hollywood, California.

The competition series will return as a holiday event for the second year in a row.

NBC is bringing back The Sing-Off.

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

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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 or what the airdate pattern will be. Casting for season 5 is currently under way.

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 4 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 4's judges and hosts will be back. Season 4 featured the returns of Nick Lachey, Shawn Stockmanand Ben Folds, with Jewelreplacing 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.

This article was originally published by The Hollywood Reporter.