Derek O'Brien (drummer)

Derek Shawn O'Brien (Fullerton, California) is a drummer and producer / engineer who has been involved with many bands and projects throughout his career.

He started his career while still at Fullerton High School (playing with the school Jazz Band, Marching Band and Orchestras led by Ron Perry) and played in Rock cover bands by night with Guitarists Stan De Witt and Frank Agnew. While still in High School, he joined local punk rock band Social Distortion and was considered to be the group's first real and consistent drummer. (1981–1984). His recordings with the band include the first EP "1945", Single ("Playpen"), BYO Compilation song "(Mass Hysteria)", and first full-length album Mommy's Little Monster. He was also featured in the cult classic Documentary "Another State Of Mind".

O'Brien was also involved in D.I. (which featured many former members of Social Distortion and the Adolescents). He played on their 1983 EP D.I., which was later re-released as Team Goon on Triple X Records. Derek performs as the drummer for D.I. in the film Suburbia, and is part of D.I.'s 1983 self-promotional video Suburbia Sessions

Bassist Brent Liles and O'Brien would again be bandmates from 1989 to the early 1990s with Agent Orange Touring North America and recording "(Real Live Sound - Agent Orange Live at the Roxy)".

In 1992 ex-singer of Geffen Recording Artist "Lockup" (featuring Tom Morrelo, who later formed Rage Against The Machine) enlisted O'Brien to join. The singer Brian Grillo split up the group to form a new band Extra Fancy featuring guitarist Michael Hately and bassist David Foster. In 1995, Extra Fancy recorded a full-length album for Atlantic Records Sinnerman and an independent EP No Mercy which has several songs featured in movie soundtracks. Extra Fancy continued until 1997.

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