Dropkick Murphys are an Irish-American Celtic punk band formed in Quincy, Massachusetts, in 1996. The lineup consists of co-lead vocalist Ken Casey, drummer Matt Kelly, co-lead vocalist Al Barr, rhythm and lead guitarist James Lynch, lead guitarist and multi-instrumentalist Tim Brennan, multi-instrumentalist and rhythm guitarist Jeff DaRosa, and bassist Kevin Rheault. Casey has been the band's only constant member since the band formed. The band is known for their loud, energetic live shows.