James Joseph "Jimmy" Chamberlin (born June 10, 1964, Joliet, Illinois) is a musician, best known as the drummer for the rock band The Smashing Pumpkins. Chamberlin's primary training was as a jazz drummer, and he played in several local outfits before joining the Pumpkins shortly after their formation in 1988, replacing a drum machine. Chamberlin's power and creativity often were credited as central to the Pumpkins' musical success. He is considered by many to be a world class drummer. See also Jimmy Chamberlin Complex, Zwan and Skysaw