Tell All Your Friends is the debut studio album by American rock band Taking Back Sunday, released on March 26, 2002, through Victory Records. Forming in 1999, the group underwent several lineup changes before settling on vocalist Adam Lazzara, guitarist and vocalist John Nolan, guitarist Eddie Reyes, bassist Shaun Cooper, and drummer Mark O'Connell. Taking Back Sunday released a five-song demo in early 2001, after which they toured the United States for most of the year. They rented a room in Lindenhurst, New York, where they wrote and demoed songs. In December 2001, the band signed with Victory Records; they began recording their debut album with producer Sal Villanueva at Big Blue Meenie Recording Studio in New Jersey.

Taking Back Sunday is an American rock band from Long Island, New York. The band was formed by guitarist Eddie Reyes and bassist Jesse Lacey in 1999. The band's members currently are Adam Lazzara, John Nolan, Shaun Cooper and Mark O'Connell (drums), accompanied by Nathan Cogan (guitar) for their live performances. The band's former members include Lacey, Reyes, bassist Matthew Rubano, and guitarist-vocalists Fred Mascherino and Matthew Fazzi.