5 Season
28 Episode
The Sing-Off - Season 4 Episode 1 The Sing Off Is Back!
Sing it. Bring it.
The groups try to make a good first impression on the judges.
- Year: 2014
- Country: United States of America
- Genre: Reality
- Studio: NBC
- Keyword: competition, music competition, singer, singing, singing competition, acapella, a cappella
- Director:
- Cast: Shawn Stockman, Nick Lachey, Patrick Stump, Jewel