Green Day is an American punk rock band formed in 1987 in Berkeley, California. The band is made up of a trio of Billie Joe Armstrong, Mike Dirnt, and Tre Cool. Green Day are highly recognized for their success in the genre of punk rock made famous again, along with Sublime, The Offspring, and Rancid. 

In 1990, along with their first drummer, John Kiffmeyer, Green Day recorded their first album, 39/Smooth. But in the same year, Tre Cool replaced the drummer John Kiffmeyer replace that out because I wanted to go to college. Tre Cool then start contributing to Green Day's second album, Kerplunk, and has been a regular member ever since. Green Day's breakthrough album, Dookie, which was released in 1994, managed to get diamond status from RIAA and bring Green Day to the peak of their careers. However, in opposition with Dookie, Green Day's next three albums, respectively Insomniac, Nimrod, and Warning, failed to gain success like Dookie. Although Insomniac and Nimrod managed to get platinum status and Warning obtain gold status, the third album it shows their overall popularity dropped dramatically. It is their rock opera album in 2004, American Idiot, which returns their popularity, especially with the fans of the younger generation. American Idiot sold over 5 million copies in the U.S. alone.their eighth album, 21st Century Breakdown, was released in 2009 and managed to get the best chart performance during Green Day's career.Green Day plan to release a trilogy of albums in the intervening five months from September 2012.Third album benama ¡Uno!, ¡Dos!, and ¡tre!.

Green Day has sold over 65 million copies of their albums worldwide with 24.639 million in the U.S. alone. Green Day has won five Grammy Awards: Best Alternative Album for Dookie, Best Rock Album for American Idiot, Record of the Year for "Boulevard of Broken Dreams", Best Rock Album for the second time for 21st Century Breakdown and Best Musical Show Album for American Idiot: The Original Broadway Cast Recording.