The Filharmonic Tickets

The fourth season of The Sing-Off premiered on December 9, 2013. The number of a cappella groups was decreased from sixteen back to ten, resulting in a new format. Nick Lachey stayed as host for the new season, with Ben Folds and Shawn Stockman returning as judges. New to the judges' table was Jewel, who replaces Sara Bareilles, who left after one season. Deke Sharon returned as music director and vocal producer. The music staff included Ed Boyer, Ben Bram, Rob Dietz, and Nick Girard. The program ran for seven episodes over the course of two weeks and concluded on December 23, 2013.