Shaun Cooper, American bass player
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 (lead vocals), John Nolan (lead guitar, keyboards, vocals), Shaun Cooper (bass guitar) and Mark O'Connell (drums), accompanied by Nathan Cogan (guitar) for their live performances. Among the band's former members include Lacey, Reyes and guitarist and vocalist Fred Mascherino.

Lazzara replaced original vocalist Antonio Longo prior to the release of the band's 2002 debut album Tell All Your Friends. Nolan and Cooper left the band in 2003 to form Straylight Run before returning in 2010. The band's breakthrough album, 2006's Louder Now, featured the popular lead single "MakeDamnSure", sold over 900,000 copies and peaked at No. 2 on the United States Billboard 200, surpassing the band's previous Billboard 200 peak in 2004 at No. 3 with Where You Want to Be.

The band most recently released their seventh album Tidal Wave in 2016. Lacey quit Taking Back Sunday in 1999 and formed the critically acclaimed rock band Brand New in 2000, with whom Taking Back Sunday would become embroiled in a highly publicized feud. Reyes left the band in 2018, leaving Taking Back Sunday without both its founding members.