Robert Moog built the first Moog synthesizer in 1964.
The electronic instrument was enormous and could play only one note at a time.
When Walter Carlos recorded Switched on Bach on it, he had to laboriously build Bach’s chords and counterpoint by repeatedly recording separate tracks on tape.
In 1970, advances in electronic miniaturization and computers led to a portable Moog synthesizer that could play chords, leading to a synthesizer boom in studio recordings and live performances.
