George Antheil's Ballet Mécanique (1923) is one of the earliest examples of composition for percussion, written originally as a film score and exemplifying the ideals of the Italian futurist movement.Antheil originally called for sixteen synchronized player pianos, as well as airplane engines, alongside more traditional percussion instruments.But it was Edgard Varèse's Ionisation that "opened the floodgates"[1] and truly brought the percussion ensemble into the fold of contemporary composition.In 1960, Alberto Ginastera composed the Cantata para América Mágica, for soprano and large percussion ensemble.In addition to Beyer, Cage, Cowell, and Harrison, American composers who have made significant contributions to percussion ensemble literature include: Steve Reich, Howard J. Buss, Augusta Read Thomas,Christopher Rouse, William Russell, William Kraft, and Eric Ewazen.