Season 4
2013 · 7 episodes · 9h 55m in all
The fourth season of The Sing-Off returned with the number of a cappella groups competing decreased from sixteen back to ten, resulting in a new format. Nick Lachey remained as host for the new season, with Ben Folds and Shawn Stockman returning as judges. New to the judges' table was Jewel, who replaced Sara Bareilles. A group was eliminated from the show each week in a new feature called the "Ultimate Sing-Off," where the two groups ranked lowest at the end of each episode would compete by singing the same song; the groups take turns alternating verses before ending the song singing together. Also, unlike previous seasons, the winner was chosen by the judges instead of by the general public.

Episodes
- 1
1. The Sing Off Is Back!
9 Dec 2013 · 85 min
The groups try to make a good first impression on the judges.
- 2
2. Party Anthems
11 Dec 2013 · 85 min
The nine remaining groups perform party anthems.
- 3
3. #1 Hits
12 Dec 2013 · 85 min
Eight groups perform their favorite hit.
- 4
4. My Generation
16 Dec 2013 · 85 min
The groups perform songs they hope will please all generations.
- 5
5. Movie Night
18 Dec 2013 · 85 min
The groups perform songs from movies.
- 6
6. Judges' Choice
19 Dec 2013 · 85 min
The groups perform songs chose by the judges.
- 7
7. Finale
23 Dec 2013 · 85 min
The three remaining groups compete; one group is declared the winner.
The Sing-Off Season 4: quick answers
How many episodes are in The Sing-Off Season 4?
Season 4 of The Sing-Off has 7 episodes, about 10 hours in total.
When did The Sing-Off Season 4 come out?
Season 4 premiered on 9 Dec 2013.