Sharon Osbourne's management company represents which American frontman?
The Smashing Pumpkins: The Smashing Pumpkins are an American alternative rock band from Chicago, Illinois, formed in 1988. The Smashing Pumpkins:  Formed by frontman Billy Corgan (lead vocals, guitar) and James Iha (guitar), the band included D'arcy Wretzky (bass guitar) and Jimmy Chamberlin (drums) in its original incarnation.
i don't know