As technology became a part of modern life in the 19th century, an increasing amount of scientific study led to breakthroughs in electronic sound engineering -- often as a byproduct of other research. Humans became enamored with the crystalline clarity of these exotic machine-borne tones and as the technology matured, so did the range of output. Electrically powered machines were recreating the sounds of traditional instruments and even mimicking human speech. Once computers arrived, the possibilities seemed boundless as software for composing and performing electronic music were developed. Below, we've gathered together a few pioneering moments that've helped shaped our electronic soundscape. So listen and learn.