Bryan "Butch" Vigorson (born August 2, 1957 in Viroqua, Wisconsin) is both a rock musician and record producer. Butch Vig first became famous in the music business in 1991 when he produced Nirvana's Nevermind and The Smashing Pumpkins' Gish and Siamese Dream. Before that he had produced lots of small punk rock bands such as Killdozer and The Other Kids. His production work on Nevermind is widely credited as the reason that Nirvana broke through to the mainstream, going #1 on the charts (replacing Michael Jackson).