The Smashing Pumpkins are an American alternative rock band from Chicago, Illinois, formed in 1988. Formed by frontman Billy Corgan (lead vocals, rhythm guitar) and James Iha (lead guitar), the band included Jimmy Chamberlin (drums) and D’arcy Wretzky (bass guitar) in its original incarnation. It has undergone many line-up changes over the course of its existence, with Corgan and rhythm guitarist Jeff Schroeder currently being the only official core members as of 2014.
In 2006, Billy Corgan and Jimmy Chamberlin reconvened to record a new Smashing Pumpkins album, Zeitgeist. After touring throughout 2007 and 2008 with a lineup including new guitarist Jeff Schroeder, Chamberlin left the band in early 2009. Later that year, Corgan began a new recording series entitled Teargarden by Kaleidyscope featuring a rotating lineup of musicians, that has resulted in the albums Oceania (2012), Monuments to an Elegy (2014), and a forthcoming album. As of 2015, Corgan and Schroeder are the sole permanent band members. Monuments to an Elegy was released on December 9, 2014. – Wikipedia