Of all the major alternative rock bands of the early '90s, the Smashing Pumpkins were the group least influenced by traditional underground rock. Lead guitarist/songwriter Billy Corgan fashioned an amalgam of progressive rock, heavy metal, goth rock, psychedelia, and dream pop, creating a layered, powerful sound driven by swirling, distorted guitars. Corgan was wise enough to exploit his angst-ridden lyrics, yet he never shied away from rock star posturing, even if he did cloak it in allegedly ironic gestures. In fact, the Smashing Pumpkins became the model for alternative roc...