Dropkick Murphys are an American Celtic punk band formed in Quincy, Massachusetts, in 1996. The band was initially signed to independent punk record label Hellcat Records, releasing five albums for the label, and building a reputation locally through constant touring and yearly St. Patrick's Day week shows, held in and around Boston. The 2004 single "Tessie" became the band's first mainstream hit and one of their biggest charting singles to date. The band's final Hellcat release, 2005's The Warrior's Code, included the song "I'm Shipping Up to Boston"; the song was featured in the 2006 Academy Award-winning movie The Departed, and went on to become the band's only Platinum-selling single to date, and remains one of their best-known songs. The band is known for their loud, energetic live shows.