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

Two groups leave as the competition heats up.

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Finale

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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.

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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.

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

Theme: Radio Hits (first round), 60's Classics (second round)

Group performance: "Somewhere Only We Know" by Keane

Theme: Radio Hits (first round), 60's Classics (second round)

Group performance: "Rhythm of Love" by Plain White T's

Theme: Guilty pleasures

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

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

Group performance: Halloween medley of "This Is Halloween" by Danny Elfman, "Werewolves of London" by Warren Zevon and "Ghostbusters" by Ray Parker, Jr.

Theme: Rock classics (first round), Country hits (second round)

Group performance: "Wake Up" by Arcade Fire

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.

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

The final three groups perform for the last time before finding out who America voted as the country’s best a capella group.

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