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DUBLIN, IRELAND - DECEMBER 16: Sinead O'Connor performs on stage at Vicar Street on December 16, 2014 in Dublin, Ireland. (Photo by Kieran Frost/Redferns via Getty Images)

DUBLIN, IRELAND - DECEMBER 16: Sinead O'Connor performs on stage at Vicar Street on December 16, 2014 in Dublin, Ireland. (Photo by Kieran Frost/Redferns via Getty Images)