THE SING-OFF Season 3 Episode 6 October 24, 2011 NBC, News THE SING-OFF Season 3 episode 6 airs Monday October 24 at 8-10 p.m. ET on NBC. The Sing-Off Show Synopsis: HIP-HOP TAKES OVER `THE SING-OFF’ AS THE EIGHT REMAINING GROUPS PERFORM FOR THE JUDGES’ VOTES WITH AN ELIMINATION SING-OFF – The eight remaining groups compete for the ultimate prize by performing hip-hop hits. The bottom two groups battle it out in a sing-off to determine who goes home. The group that remains standing at the end of the season receives the prize of $200,000 cash and a Sony Music recording contract. Nick Lachey hosts and Sara Bareilles, Ben Folds and Shawn Stockman serve as judges.