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 . The group 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 . Warning ( stylized as WARNING :) is the sixth studio album by American punk rock band Green Day , released on October 3 , 2000 by Reprise Records .