The Smashing Pumpkins are an American alternative rock band formed in Chicago in 1988 by frontman Billy Corgan and guitarist James Iha. Known for their distinctive fusion of heavy metal, gothic rock, and dream pop, they gained prominence in the 1990s, becoming a key part of the grunge movement. Their 1993 album, "Siamese Dream," and 1995's double album, "Mellon Collie and the Infinite Sadness," are often cited as influential works in alternative rock. Despite lineup changes over the years, Corgan's introspective lyrics and signature layered sound remain central to the band's style.