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BERLIN, GERMANY - APRIL 23: Kirstie Maldonado of Pentatonix perform at Columbiahalle on April 23, 2015 in Berlin, Germany. (Photo by Sebastian Reuter/Redferns via Getty Images)

BERLIN, GERMANY - APRIL 23:  Kirstie Maldonado of Pentatonix perform at Columbiahalle on April 23, 2015 in Berlin, Germany.  (Photo by Sebastian Reuter/Redferns via Getty Images)