During the early '90s, Phish emerged as heirs to the Grateful Dead's throne. Although their music was somewhat similar to the Dead's sound -- an eclectic, free-form rock & roll encompassing elements of folk, jazz, country, bluegrass, and pop -- the group adhered more to jazz-derived improvisation than folk tradition. Moreover, they sported a looser, goofier attitude; after all, their drummer regularly played a vacuum during their concerts. However, Phish's main claim as the inheritors to the Dead's legacy was their approach to their musical career. The band didn't concentrate ...