Discover the story of the song > Warning – Green Day

Green Day is a highly influential rock band that formed in California in 1987 as a power trio consisting of Billie Joe Armstrong, Mike Dirnt and John Kiffmeyer, before Tré Cool replaced Kiffmeyer in 1990. The band was originally called Sweet Children and was part of the Bay Area punk scene, releasing its first songs on Lookout! Records. However, it was their debut album, Dookie, that marked their mainstream success, selling over 10 million copies in the United States. Green Day is often credited with helping to popularize interest in punk rock, along with other California punk bands.