Green Day is an American punk rock band formed in 1986 by lead vocalist and guitarist Billie Joe Armstrong and bassist Mike Dirnt. For much of the group’s career, the band has been a trio with drummer Tré Cool, who replaced former drummer John Kiffmeyer in 1990 prior to the recording of the band’s second studio album, Kerplunk (1991). Guitarist Jason White, who has worked with the band as a touring member since 1999, was an official member from 2012 to 2016.
Green Day was originally part of the punk scene at the DIY 924 Gilman Street club in Berkeley, California. The band’s early releases were with the independent record label Lookout! Records. In 1994, its major label debut Dookie became a breakout success and eventually shipped over 10 million copies in the U.S. Green Day was widely credited, alongside fellow California punk bands Sublime, Bad Religion, The Offspring, and Rancid, with popularizing and reviving mainstream interest in punk rock in the United States.