Unaccountably, Percy Grainger has remained on the margins of both American music history and twentieth-century modernism. This volume reveals the well-known composer of popular gems to be a self-described a hyper-modernista who composed works of uncompromising dissonance, challenged the conventions of folk song collection and adaptation, re-visioned the modern orchestra, experimented with a ego-lessa composition and designed electronic machines intended to supersede human application. Grainger was far from being a self-sufficient maverick working in isolation. Through contact with innovators...