Joshua Adam Klinghoffer

Dropping out of formal education at the age of 15, Klinghoffer became involved in performing and recording music in Los Angeles at an early age. Klinghoffer describes himself at this time as "[the] little music dork who lived around the corner, dropped out of high school, and was just playing guitar all day long." In 1997, at the age of seventeen, Klinghoffer joined The Bicycle Thief, the then-current project from former Thelonious Monster frontman Bob Forrest. Red Hot Chili Peppers vocalist Anthony Kiedis noted that, "Bob [Forrest] has always had a very keen sensibility about finding extremely talented and down-to-earth people who just want to get to a kitchen and write a song." The band's subsequent studio album, You Come and Go Like a Pop Song, marked Klinghoffer's first recording experience. Regarding bandmate Forrest's notorious drug addiction, which arguably stalled Thelonious Monster's commercial success, Klinghoffer stated at this time that he: "Pretty much had enough confidence in myself to know that I wasn't gonna be 'the next Bob Forrest'." It was during the recording of Bicycle Thief album that Josh first met John Frusciante, who came in to record a guitar solo. The two eventually began to hang out and listen to music together at Frusciante's home.

In 2000, The Bicycle Thief opened for Red Hot Chili Peppers, as the latter toured in support of their seventh studio album, Californication.