They are a pop punk band from Wilmette, Illinois(a suburb of Chicago, Illinois) that formed in 2001. The band consists of Patrick Stump (lead vocals, guitar), Pete Wentz (bass, backup vocalist, and primary lyricist), Joe Trohman (lead guitar), and Andy Hurley (drums).
The band employs an unconventional division of songwriting responsibilities between its members. While lead singer and guitarist Patrick Stump writes the band's music, the band's bassist Pete Wentz writes the group's lyrics. Despite his position as bassist, Wentz is generally considered to be the frontman and spokesperson of the band, and is usually featured in the foreground of group photographs.