Luigi Russolo, an Italian composer and artist, built the “Intonarumori,” a number of experimental sounds machines that laid the groundwork for what we now identify as electronic music.Vicious­ly irrev­er­ent tone and com­pletist atten­tion to depth are typ­i­cal via­out this ency­clo­pe­dia, an inter­ac­tive Flash circulation­cha