Acapella renditions of hits by big-name artists like Britney Spears and Marvin Gaye helped this five-member troupe claim victory on the third season of NBC’s The Sing-Off. The group meticulously harmonizes covers of chart-topping singles by the likes of Nicki Minaj, Fun., and Gotye without any instruments. Listen as familiar tunes get gleefully arranged over a thumping beatbox bass. Sun 7 p.m. 

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