As Grammy Award-winning juggernaut Pentatonix continues blazing new trails in the contemporary a cappella scene, they stop for a moment to admit what may surprise many. Even while PTX has redefined "cool" for a cappella enthusiasts, these confessed choir nerds continue embracing their roots, implore everyone to SING, and roughly once a year take a little time to watch the Barbershop Harmony Society’s Quartet Finals.

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