Even though Luigi Russolo was one of the leaders of the futurist movement, little physical evidence of his musical contributions remains, as nearly all of his scores and inventions no longer exist (only one recording of his work has survived). However, his Futurist Manifesto, addressed to "Balilla Pratella, grande musicista futurista," has been translated into English by Nicolas Slonimsky and is found in Music Since 1900. It was only a year after the movement was formed in 1909, in response to Marinetti's own Futurist Manifesto from Le Figaro, that Russolo first became involve...