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SAN ANTONIO, TX - FEBRUARY 15: Vocalist Kirstie Maldonado of Pentatonix performs in concert as part of the San Antonio Stock Show & Rodeo at the AT&T Center on February 15, 2015 in San Antonio, Texas. (Photo by Rick Kern/WireImage)

SAN ANTONIO, TX - FEBRUARY 15:  Vocalist Kirstie Maldonado of Pentatonix performs in concert as part of the San Antonio Stock Show & Rodeo at the AT&T Center on February 15, 2015 in San Antonio, Texas.  (Photo by Rick Kern/WireImage)