Futuristic synthesizer specialist and sound designer Matsuo Ohno was responsible for the sound design of a broad range of film, television, and radio soundtracks, most famously the animation series Astro Boy which he began working on in 1963 together with his assistant, Takehisa Kosugi. Ohno was born in the heavily-populated Kanda district of central Tokyo in 1930 and was heavily affected by the repeated bombing raids on the city enacted in World War II. The five suites of tracks that make up the Roots Of Electronic Sound album were recorded between 1963 and 1966; initially released on the ALM label in 1975, it is comprised of brief tape experiments, the cover artwork fittingly representing Astro Boy, from which many of the audio interludes are taken.