5 Season
28 Episode
The Sing-Off - Season 4 Episode 3 #1 Hits
Sing It. Bring It.
Eight groups perform their favorite hit.
- 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