was originally hired to mix Siamese Dream because Corgan was a fan of his work producing shoegaze bands such as My Bloody Valentine, Ride, and Slowdive. Like many contemporary alternative bands, the Smashing Pumpkins utilized shifts in song dynamics, going from quiet to loud and vice versa. Hüsker Dü's seminal album Zen Arcade demonstrated to the band how they could place gentler material against more aggressive fare, and Corgan made such shifts in dynamics central to the pursuit of his grand musical ambitions. Corgan said he liked the idea of creating his own alternative universe through sound that essentially tells the listener, "Welcome to Pumpkin Land, this is what it sounds like on Planet Pumpkin." This emphasis on atmosphere carried through to Adore (described as "arcane night music" in prerelease promotion) and the Machina albums (concept records that tell the story of a fictional rock band). The Pumpkins drew inspiration from a variety of other genres, some unfashionable during the 1990s among music critics. Corgan in particular was open about his appreciation of heavy metal, citing Dimebag Darrell of Pantera as his favorite contemporary guitarist. When one interviewer commented to Corgan and Iha that "Smashing Pumpkins is one of the groups that relegitimized heavy metal" and that they "were among the first alternative rockers to mention people like Ozzy and Black Sabbath with anything other than contempt". Corgan went on to rave about Black Sabbath's Master of Reality and Judas Priest's Unleashed in the East. The song "Zero", which reminded Iha of Judas Priest, is an example of what the band dubbed "cybermetal." Post-punk and gothic rock bands like Joy Division/New Order, Bauhaus, the Cure, and Depeche Mode were formative influences on the band, which covered such artists in concert and on record. Corgan also cited Siouxsie and the Banshees saying it was important to point back to bands that influenced them. Psychedelic rock was also referenced often in the band's early recordings; according to Corgan, "In typical Pumpkins fashion, no one at that point really liked loud guitars or psychedelic music so, of course, that's exactly what we had to do." Corgan felt that the band's guitars "are a mixture of heavy metal and 80s alternative rock. I think of Cure and Siouxsie and the Banshees". Corgan acknowledged that a chord he jokingly claimed as "the Pumpkin chord" (a G# octave chord at the eleventh fret of a guitar