William Patrick "Billy" Corgan, Jr. (born March 17, 1967) is an American singer, songwriter, guitarist and occasional poet who is, along with James Iha, a founding member of The Smashing Pumpkins. Corgan started playing shows around Chicago, Illinois with guitarist James Iha, and a drum machine in 1987. The project quickly gained steam with the addition of bassist D'arcy Wretzky and drummer Jimmy Chamberlin. In three years, The Smashing Pumpkins had transformed themselves into a major label success. Strong album sales and large-scale tours propelled the band's increasing fame, while Chamberlin's drug problems escalated until he had to be fired. The Pumpkins continued as a three-piece until Chamberlin rejoined the band in 1999, and the band broke up in 2000. Corgan started a new band with Chamberlin right away, called Zwan, and after their demise, he released a solo album and a collection of poetry before setting his sights on reforming the Smashing Pumpkins.

The new version of that band, consisting of Corgan, Chamberlin, and a revolving tour lineup, released an album in 2007 and followed it with extensive touring over the next year and a half. Chamberlin left the Smashing Pumpkins in March 2009, while Corgan continued on with a new lineup, currently recording the album Teargarden by Kaleidyscope and touring.