Green Day

Green Day is an American musical group of punk rock composed by Billie Joe Armstrong (guitar and lead vocals), Mike Dirnt (bass and vocals) and Tré Cool (drums and vocals). The band was formed in Berkeley, California, in 1986, initially under the name of Sweet Children, with John Kiffmeyer (also known as Al Sobrante) on drums. In 1989, they changed their name to Green Day to avoid confusion with another local band called Sweet Baby. Shortly after releasing their first studio album, 39/Smooth, Tré Cool replaced Al Sobrante on drums.The group is one of many that emerged from the 924 Gilman Street club, a place frequented by local punk rock bands.

Their early works were released through the independent label Lookout!, which allowed them to gain a fan base thanks to the strong sales of their initial records. In 1994, they signed with Reprise Records and released the successful album Dookie, which brought the sound of punk rock from the 1970s to a new generation and sold over thirty million copies worldwide.Alongside bands like The Offspring and Rancid, Green Day was fundamental in the resurgence and popularization of punk rock in the United States, which led to the appearance of numerous pop punk and punk rock groups. Although many of these groups dissolved or ceased to be active a decade later, Green Day continued innovating with the rock operas American Idiot and 21st Century Breakdown, released in 2004 and 2009 respectively, both winning the Grammy Award for Best rock album.