by Emma Silvers On May 23, 2000, the Smashing Pumpkins' frontman Billy Corgan, he of shiny bald head and unmistakable wail -- veering, as it does, from sing-song falsetto to painful-sounding growl within a single, lyrical line -- announced in a live interview on L.A.'s KROQ-FM that the band would be breaking up at the end of its current tour. It was no secret that band members were not getting along.... [