On 'The Sing-Off' (Mon., 8PM ET on NBC), we flipped back to the first bracket, that featured stand-out supergroup Delilah in the first week of the competition. But could they match their stellar vocals on 'Grenade' when featuring other members of the group in lead?
This week, the six remaining contenders in this group had to sing two songs each. First was a contemporary pop song followed by a classic hit from the 1960s. Things were switched up quite a bit this week, with some new voices rising to the top, and one group falling short.