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Vox Pop and KeyStone present: A Cappella Showcase at Maryland Hall in Annapolis!

Washington DC's Vox Pop and Philadelphia's KeyStone will join forces for the first CAL Home & Home partnership performance at a showcase of a cappella presented in partnership

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Contemporary A Cappella League (CAL) Profile: KeyStone [Philadelphia, PA]

With NBC’s announcement that The Sing-Off was coming back for a fourth season, all over the country powerhouse a cappella groups began assembling for a shot at stardom on the big screen.