John William Stevenson (born September 10, 1963 in Torrance, California), better known as Bill Stevenson, is an American musician. He is the drummer for the California punk rock group Descendents. In late December 1981 he played a few concerts with Black Flag because their drummer ROBO was detained in England after a tour there, he went on to record with Black Flag on several of their albums until 1985. After this he focused his attention on the Descendents and played with them until Milo Aukerman left in 1987 to attend college. After Milo had left, Bill and the others from the Descendents got singer Dave Smalley of Dag Nasty and formed ALL. ALL went on to go through two other singers, Scott Reynolds (1989-1993) and Chad Price (1993-Present). Aukerman came back to do the 1996 album Everything Sucks and the newest, Cool To Be You. ALL and Descendents continue to tour (Warped Tour 04) between Bill's and Milo's respective careers as a recording engineer, and a biochemist, however it has been some years since either ALL or the Descendents have done any touring.

Bill Stevenson, along with Jason Livermore are the founders of the legendary punk recording studio "The Blasting Room" in Fort Collins, CO.

Currently, Bill is involved in Russ Rankin's side project Only Crime with former members of GWAR and Converge.

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