Ben Folds joined Hoda Kotb as the guest host on the fourth hour of 'Today' (9AM ET on NBC) where he talked about what sets 'The Sing-Off' apart from other reality music shows and demonstrated his harmonizing skills by singing an improvised jingle made up of the notes on Hoda's cue cards.

"I think this show is socially significant. Music education has been on the down, and filling the space has been kids singing at colleges. There are about 4-8 A capella groups at each university now," he said." As for the show's contestants, he explained, "they're not divas. This show isn't about egos, it's people working together."