Dropkick Murphys | Signed and Sealed in Blood T-Shirt Men 
 
Dropkick Murphys band Licensed Merchandise 
100% Cotton T-Shirt 
 
Taking their musical cues from British Oi!, American hardcore, and traditional Irish music, Boston's Dropkick Murphys have built a reputation as one of America's most celebrated Celtic punk outfits. The group formed in the late '90s as a fiery, though relatively straightforward punk outfit, but through the years they began incorporating traditional Irish folk instrumentation and melody into their unruly sound. Signed and Sealed in Blood is the eighth studio album by the Dropkick Murphys, released in 2013.