Green Day makes music.
American Idiot is the seventh studio album by American rock band Green Day . Green Day is an American punk rock band formed in 1986 by lead vocalist and guitarist Billie Joe Armstrong and bassist Mike Dirnt . In 1994 , its major label debut Dookie ( released through Reprise Records ) 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 . Insomniac is the fourth studio album by American punk rock band Green Day , released on October 10 , 1995 by Reprise Records . Warning ( stylized as WARNING :) is the sixth studio album by American punk rock band Green Day , released on October 3 , 2000 by Reprise Records .