Smashing Pumpkins are considered to be one of the seminal rock ’n’ roll groups, whose top-charting albums in the ’90s paved the way for many bands today. Billy Corgan, the frontman and only remaining original member, reformed the band in 2007 and released Zeitgeist, which references a Marxian concept of the spirit of the age. Not one to shy away from controversy, Billy Corgan has remained a steadfast, outspoken critic of what’s left of the record industry.