Pilot

Eight a cappella groups from across America compete to win a recording contract; host Nick Lachey.

Big Hits & Guilty Pleasures

Two groups leave as the competition heats up.

Superstar Medley, Judges' Challenge & Songs Of Hope

The Finale

Finale

Episode 1

Episode 2

Episode 3

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.

Episode 5

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.

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

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

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

Top 10 Groups: Guilty Pleasure Music

Theme: Guilty pleasures Group performance: "All Night Long (All Night)" by Lionel Richie*

Top 8 Groups: Hip-Hop Hits

Group performance: "Nothin' on You" by B.o.B. featuring Bruno Mars

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.

Top 6 Groups: Rocking Out & Goin' Country

Theme: Rock classics (first round), Country hits (second round) Group performance: "Wake Up" by Arcade Fire

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.

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

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.

The Sing Off Is Back!

The groups try to make a good first impression on the judges.

Party Anthems

The nine remaining groups perform party anthems.

#1 Hits

Eight groups perform their favorite hit.

My Generation

The groups perform songs they hope will please all generations.

Movie Night

The groups perform songs from movies.

Judges' Choice

The groups perform songs chose by the judges.

Finale

The three remaining groups compete; one group is declared the winner.

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.