American country a cappella group of five vocalists: Adam Bell-Bastien, Adam Chance, Rob Lundquist, Adam Rupp, and Tim Foust. Starting as a show group, they toured with approximately 200 shows a year across the United States. The group won the fourth season of The Sing-Off on NBC in 2013. They sang an arrangement of Hunter Hayes's "I Want Crazy" as their final competitive song, earning the group $100,000 and a recording contract with Sony