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BIRMINGHAM, AL - MARCH 04: Al Barr, Ken Casey, James Lynch and Jeff DaRosa of Dropkick Murphys perform onstage at Iron City on March 4, 2017 in Birmingham, Alabama. (Photo by Jessica Sigmon Wallace/WireImage)

BIRMINGHAM, AL - MARCH 04:  Al Barr, Ken Casey, James Lynch and Jeff DaRosa of Dropkick Murphys perform onstage at Iron City on March 4, 2017 in Birmingham, Alabama.  (Photo by Jessica Sigmon Wallace/WireImage)