The Sing-Off (2009) Primewire Title: The Sing-Off Year: (2009) Runtime: 120 mins Genres: Game-Show, Music, Reality-TV Stars: Nick Lachey, Nicole Scherzinger, Shawn Stockman Watch The Sing-Off primewire online. The Sing-Off stars Nick Lachey, Nicole Scherzinger, Shawn Stockman.