 She joined "The Sing-Off" as a judge in its third season alongside musicians Ben Folds and Shawn Stockman (of Boyz II Men).She and Folds sang the Frank Loesser classic "Baby, It's Cold Outside" on a Christmas-themed episode of the show in December 2011.Folds later produced, played on, and provided backing vocals on Bareilles' 2012 EP "Once Upon Another Time".