[Video] 'The Sing-Off' Preview: Doo-Wop Group Takes on One Direction
[Video] 'The Sing-Off' Preview: Doo-Wop Group Takes on One Direction
Esther Gim
Esther Gim
Contributing Writer, BuddyTV
After a two-year hiatus, The Sing-Off returns to NBC Monday December 9 for a holiday run -- just in time as The Voice gets ready to wrap up its current season.

There are probably one too many singing competitions on the air right now, but The Sing-Off is the only one where there's no band and no accompanying music -- it's all arranged, sung and performed by the singers themselves.

Ten a cappella groups, ranging from college to doo-wop will vie to be the last ones standing, following in the footsteps of season 1 winners Nota, Committed (season 2) and Pentatonix (season 3). The prize? $100,000 and a recording contract.

Returning from previous seasons is host Nick Lachey and judges Ben Folds and Shawn Stockman. New to the judges' chair in season 4 is Jewel.

Check out some of the competition you'll hear this season.

Street Corner Renaissance's Take on One Direction

There's always one doo-wop group, and this season it's this quintet from Los Angeles. They take on a boy band hit, infusing it with their old-school harmonies. (Not to be confused with Street Corner Symphony, which came in second place in season 2.)

One Direction has never sounded this good. Doo-wop groups haven't made it terribly far in The Sing-Off since they usually rely on old classics. And while they always sound good, there has been lack of innovation. But if Street Corner Renaissance can take current hits and make it interesting while still fitting in their genre, they will definitely be sticking around.

Home Free Covers "Cruise"

This all-male country group from Minneapolis are already established performers who travel across the country by RV to share their sound.

These guys definitely sound like they've been together for awhile. They're polished and modern/contemporary. They just might be one of the ones to beat.

The Sing-Off will premiere Monday at 9pm on NBC.

(Image courtesy of NBC)