Green Day makes music.
Green Day is an American punk rock band formed in 1986 by lead vocalist and guitarist Billie Joe Armstrong and bassist Mike Dirnt . The band 's twelfth studio album , Revolution Radio was released on October 7 , 2016 and debuted at number one on the Billboard 200 , their third album to do so . Warning ( stylized as WARNING :) is the sixth studio album by American punk rock band Green Day , released on October 3 , 2000 by Reprise Records .