The Smashing Pumpkins are an American rock band formed in Chicago in 1988 by Billy Corgan, with original members James Iha, D'arcy Wretzky, and Jimmy Chamberlin. Their music is commonly described as alternative rock, with influences from grunge, gothic rock, psychedelic rock, and dream pop. The band first gained wide attention with albums such as Gish (1991), Siamese Dream (1993), and Mellon Collie and the Infinite Sadness (1995), which became a major commercial success and won a Grammy Award for Album of the Year? They are also known for dense guitar arrangements, changes in lineup, and live performances that often emphasize a large, layered sound and extended arrangements.