premise: Billie Joe Armstrong is a vocalist of the American rock band Green Day.
hypothesis: Billie Joe Armstrong ( born February 17 , 1972 ) is an American musician , singer , songwriter and actor who is best known as the lead vocalist , primary songwriter , and guitarist of the punk rock band Green Day , which he co-founded with Mike Dirnt . He is also a guitarist and vocalist for the punk rock band Pinhead Gunpowder and provides lead vocals for Green Day 's side projects Foxboro Hot Tubs and The Network . `` Boulevard of Broken Dreams '' is a song by American punk rock band Green Day , recorded for their seventh studio album American Idiot ( 2004 ) . Green Day is an American punk rock band formed in 1986 by lead vocalist and guitarist Billie Joe Armstrong and bassist Mike Dirnt .