Casey Royer (born October 8, 1960) is an American musician who began his career playing drums for punk bands, The Detours and Social Distortion at age 18 in 1978. He then moved on to play for The Adolescents off and on from 1980–87. While The Adolescents were on hiatus from 1981–86, Casey went on to form D.I. in 1981, a Southern California hardcore beach-party punk band. When The Adolescents regrouped in 1986, Casey returned to start working on their new album, Brats in Battalions, but left before the album was recorded. He rejoined them in 2001-2002 for their 20th Anniversary Tour. Casey also joined ADZ from 1989–93, after which he again made D.I. his primary focus. He is the only remaining original member of D.I.'s line-up and has been billed as their vocalist since 1981.
Currently on tour with D.I. and writing a new album that should be released sometime in 2006 or 2007. The new album will be the follow-up to 1994's "State of Shock". [April 2006]
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D.I. disbanded in 1995, but reformed this time without any original member. [2002]
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(1979-1980) Was part of the first incarnation of Social Distortion as their drummer, but he never recorded any albums with the band.
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(1980-1987) Was the drummer for the California punk band The Adolescents.