Season 4, Episode 1 The Sing-off Is Back!

First Aired: December 9, 2013

The groups try to impress the judges and win over the crowd with the best songs from their music libraries in the Season 4 premiere.

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  • Premiered: December 14, 2009
  • Rating: TV-PG
  • User Rating:4.39 out of 5 (76 ratings)
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  • Premise: Eight a cappella groups from around the country compete for a recording contract and $100,000. (more)

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