premise: Billie Joe Armstrong is a solo artist.
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 . The band changed its name to Green Day , and would later achieve massive commercial success . In 1997 , to coincide with the release of Nimrod , Armstrong founded Adeline Records in Oakland to help support other bands releasing music and signed bands such as The Frustrators , AFI and Dillinger Four .