TheSingOff

A cappella + rap = a match made in heaven? On last night's 'Sing Off' episode 2, the seven remaining a cappella groups tackled big hits and guilty pleasure songs, like Flo Rida's 'Right Round' and 'Stayin' Alive' by the Bee Gees.

But the judges gushed most over group Nota's take on 'Down' by Jay Sean. What did you think of last night's performances? Which group came out on top? Watch the full episode now!

Remember the short-lived series 'Don't Forget the Lyrics'? How about 'The Singing Bee,' hosted by 'N Sync alum Joey Fatone?

Well, here comes one even shorter: According to PEOPLE, Nick Lachey will host the NBC series 'The Sing Off,' a four-night event in which eight groups of people will compete using only their voices.

"It's just them naked on stage," Nick Lachey said of his new gig.

NBC is getting into the holiday spirit the old fashioned way: with a week of caroling.

Yes, Variety reports that NBC has announced their schedule for December and it includes four days of their new a capella competition 'The Sing-Off'. The show, which borrows liberally from Fox's surprise smash hit 'Glee' by featuring a capella performances of popular pop tunes, will roll out with a series of two-hour specials beginning Mon., Dec. 14 and culminating in a grand finale a week later on Dec. 21.