4th Season Finale The Sing-Off : Season 4 Episode 7
NBC 2h 00m
Aired: December 23rd, 2013 @ 8:00 PM EST on NBC
The three remaining groups compete; one group is declared the winner.
NBC 2h 00m
Aired: December 23rd, 2013 @ 8:00 PM EST on NBC
The three remaining groups compete; one group is declared the winner.
