Taking Back Sunday is an American rock band from Long Island, New York, formed in 1999 and featuring the current line-up of Adam Lazzara (lead vocals), John Nolan (guitar, keyboards, vocals), Shaun Cooper (bass guitar), and Mark O'Connell (drums, percussion), accompanied on tour by Nathan Cogan (guitars, keyboards). The group was originally formed by Antonio Longo, John Nolan, Eddie Reyes, Jesse Lacey, and Steven DeJoseph. The band has gone through multiple line-up changes in their career spanning seven studio albums. There have been eleven official members of Taking Back Sunday, four touring members, and twenty-three session members.