William Corgan Sr.

William Corgan Sr. is a blues guitarist and father to Billy Corgan. In 1988, his River North home studio is where the first two Smashing Pumpkins studio sessions took place. He played the guitar solo in "The Last Song" from the "Thirty-Three" single in 1996, and has performed alongside Billy at several shows since 1999. He is also credited as an illustrator for the 2011 reissue of Siamese Dream.