Released months before Nevermind and produced by Butch Vig, the Smashing Pumpkins’ 1991 debut Gish helped ignite the ’90s alternative rock surge. Blending metallic riffs, arena-rock grandeur, and introspective lyrics, Billy Corgan showcased a knack for richly layered guitar arrangements on tracks like “I Am One,” “Rhinoceros,” “Siva,” and “Daydream,” highlighting the band’s early potential.