5 Sezon
28 Episod
The Sing-Off - Season 4 Episode 1 Episodul 1 (2014)
The groups try to make a good first impression on the judges.
- Țară : United States of America
- Gen : Reality
- Studio : NBC
- Director :
- Distribuție : Shawn Stockman, Nick Lachey, Patrick Stump, Jewel
