Luigi Russolo (April 30, 1885 - February 4, 1947) was an Italian Futurist painter and composer. On 11 March 1913 he published the treatise The Art of Noises (L'arte dei rumori). He is considered the first theorist of electronic music. Russolo invented and built instruments including intonarumori ("intoners" or "noise machines"), to create "noises" for performance.
Click here to download the futurist manifesto (via UBUWEB).