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In page Billie Joe Armstrong:
"In 1987, aged 15, Armstrong formed a band called Sweet Children with his childhood friend Mike Dirnt. In the beginning, Armstrong and Dirnt both played guitar, with Raj Punjabi[1] on drums[2] and Sean Hughes on bass. Punjabi was later replaced on drums by John Kiffmeyer, also known as Al Sobrante. After a few performances, Hughes left the band in 1988; Dirnt then began playing bass and they became a three-piece band. They changed their name to Green Day in April 1989, choosing the name because of their fondness for marijuana.[3]
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