
1 Formation and Lookout years (1987–93).The band has sold over 85 million records worldwide, They also have four Grammy Awards, Best Alternative Album for Dookie, Best Rock Album for American Idiot and 21st Century Breakdown, and Record of the Year for " Boulevard of Broken Dreams". The next rock opera was 21st Century Breakdown released in 2009. Green Day's 2004 rock opera American Idiot reignited the band's popularity with a younger generation, selling five million copies in the U.S. Green Day's three follow-up albums, Insomniac, Nimrod and Warning did not achieve the massive success of Dookie, but they were still successful, reaching double platinum, double platinum, and gold status respectively. As a result, Green Day was widely credited, alongside fellow California punk bands The Offspring and Rancid, with reviving mainstream interest in and popularizing punk rock in the United States. alone, and 15 million copies sold worldwide. Nevertheless, its major label debut Dookie (1994) became a breakout success and eventually sold over 10 million copies in the U.S. Its early releases for independent record label Lookout! Records earned them a grassroots fanbase, some of whom felt alienated when the band signed to a major label. Green Day was originally part of the punk rock scene at 924 Gilman Street in Berkeley, California.

The band has consisted of Billie Joe Armstrong (lead vocals, guitar), Mike Dirnt (bass guitar, backing vocals) and Tré Cool (drums, backing vocals) for the majority of the band's existence. Green Day is an American punk rock band formed in 1987.
