Monday, December 5th, 2011
1: Holiday Special
Monday, December 14th, 2009
Eight a cappella groups from across America compete to win a recording contract; host Nick Lachey.
Tuesday, December 15th, 2009
2: Big Hits & Guilty Pleasures
Two groups leave as the competition heats up.
Wednesday, December 16th, 2009
3: Superstar Medley, Judges' Challenge & Songs Of Hope
Monday, December 21st, 2009
4: The Finale
Monday, December 6th, 2010
1: Episode 1
Wednesday, December 8th, 2010
2: Episode 2
Monday, December 13th, 2010
3: Episode 3
Wednesday, December 15th, 2010
4: Episode 4
The five remaining groups come together for a performance; each group sings a medley of songs by a single artist; the judges choose the contestants' next assignment.
Monday, December 20th, 2010
5: Episode 5
Monday, September 19th, 2011
1: Season Premiere: Part 1
Eight of the 16 competing acapella groups perform as the competition kicks off. Sara Bareilles joins Ben Folds and Shawn Stockman on the judging panel.
Monday, September 26th, 2011
2: Season Premiere: Part 2
Eight more groups perform together and separately. The groups include Messiah's Men, North Shore, Pentatonix, Sonos, Soul'd Out, The Collective, University of Delaware Deltones, Vocal Point
Monday, October 3rd, 2011
3: Radio Hits & 60's Classics: Part I
Theme: Radio Hits (first round), 60's Classics (second round) Group performance: "Somewhere Only We Know" by Keane
Monday, October 10th, 2011
4: Radio Hits & 60's Classics: Part 2
Theme: Radio Hits (first round), 60's Classics (second round) Group performance: "Rhythm of Love" by Plain White T's
Monday, October 17th, 2011
5: Top 10 Groups: Guilty Pleasure Music
Theme: Guilty pleasures Group performance: "All Night Long (All Night)" by Lionel Richie*
Monday, October 24th, 2011
6: Top 8 Groups: Hip-Hop Hits
Group performance: "Nothin' on You" by B.o.B. featuring Bruno Mars
Monday, October 31st, 2011
7: Top 7 Groups: Superstar Medleys
Group performance: Halloween medley of "This Is Halloween" by Danny Elfman, "Werewolves of London" by Warren Zevon and "Ghostbusters" by Ray Parker, Jr.
Monday, November 7th, 2011
8: Top 6 Groups: Rocking Out & Goin' Country
Theme: Rock classics (first round), Country hits (second round) Group performance: "Wake Up" by Arcade Fire
Monday, November 14th, 2011
9: Top 5 Groups: The Rhythm & Blues Revue
The top five groups open the show with a medley of "I Feel Good" by James Brown, "ABC" by The Jackson 5 and "Crazy in Love" by Beyonce. Later they each perform their favorite R&B hits in an attempt to woo the judges for their votes. The group that remains standing at the end of the season receives the prize of $200,000 cash and a Sony Music recording contract. Nick Lachey hosts and Sara Bareilles, Ben Folds and Shawn Stockman serve as judges.
Monday, November 21st, 2011
10: America Votes: Group Mastermixes
Theme: Master Mix (combining 2 songs from different artists) (first round), Judges' Choice (second round) Group performance: Master Mix: "Bitter Sweet Symphony" by The Verve, "Hollaback Girl" by Gwen Stefani, "Baba O'Riley" by The Who, and "Last Friday Night (T.G.I.F.)" by Katy Perry
Monday, November 28th, 2011
11: Live Finale: Top 3 Finalists
The final three groups perform for the last time before finding out who America voted as the country’s best a capella group.
Monday, December 5th, 2011
12: A Sing-Off Christmas
Holiday and inspirational songs performed by the winning groups from all three seasons, a compilation of lead singers from season three, a collegiate ensemble and special guests.
Monday, December 9th, 2013
1: The Sing Off Is Back!
The groups try to make a good first impression on the judges.
Wednesday, December 11th, 2013
2: Party Anthems
The nine remaining groups perform party anthems.
Thursday, December 12th, 2013
3: No. 1 Hits
Eight groups perform their favorite hit.
Monday, December 16th, 2013
4: My Generation
The groups perform songs they hope will please all generations.
Wednesday, December 18th, 2013
5: Movie Night
The groups perform songs from movies.
Thursday, December 19th, 2013
6: Judges' Choice
The groups perform songs chose by the judges.
Monday, December 23rd, 2013
7: 4th Season Finale
The three remaining groups compete; one group is declared the winner.
Wednesday, December 17th, 2014
1: One Night Only: A Special Holiday Event
A cappella groups Timothy's Gift, Melodres, the Exchange, Traces, San Fran 6 and A. Squared compete for a first-place prize of $50,000. Jewel and Shawn Stockman return as judges, and are joined by Fall Out Boy's Patrick Stump.