Bob Moog (along with Don Buchla) invented the modern synthesizer. Someday what they pioneered will be seen as a watershed moment in music history.
Professors teach us in Music 101 that music consists of three basic elements: pitch rhythm and timbre. From the primitive origins in ancient Greece all the way through the beautiful soundscapes of the Romantic Era, Western classical music explored pitch to a deep complexity. After the liberation of the slaves in the American Civil War, syncopated African rhythm became intertwined with classical music, giving rise to ragtime, blues, various forms of jazz and eventually rock and roll. Despite this explosion of new themes with pitch and rhythm, timbre was still confined to the relatively walled world of acoustic instruments until the invention of the synthesizer provided liberation. We can thank Moog and Buchla for that.