Image: Rca mk2.jpg: Finnianhughes101 derivative work: RCA Mark II Sound Synthesizer.png: Clusternote derivative work: Clusternote (talk), CC0 — via Wikimedia Commons
RCA Mark II Sound Synthesizer
| Category | Electronic (early programmable synthesizer) |
|---|---|
| Country of origin | USA |
| Classification | synthesizer |
| Wikipedia | en.wikipedia.org |
| Wikidata | Q5988194 |
Overview
The RCA Mark II Sound Synthesizer was a large, room-sized electronic music instrument completed in 1957. Built by RCA engineers Herbert Belar and Harry Olson, it is generally regarded as the first programmable electronic music synthesizer. The Mark II used a paper-tape input system to control oscillators, filters, and amplifiers, allowing composers to specify pitch, timbre, dynamics, and timing with a precision that earlier electronic instruments could not match.
Origin & History
RCA developed the Mark II as a successor to its earlier Mark I, with the goal of producing music for commercial as well as research use. The Mark II was installed at the Columbia-Princeton Electronic Music Center in New York, where it remained the central instrument for decades. Composers including Milton Babbitt, Charles Wuorinen, and Vladimir Ussachevsky used the Mark II to produce some of the most influential American electronic works of the late 1950s and 1960s.
How It Was Played
The Mark II was not played in real time. Composers prepared a punched paper tape that specified the values for each musical parameter at successive moments in time. The synthesizer read the tape, generated the sound, and recorded it directly to disk or tape. A short piece could require many hours of preparation. The instrument’s complexity meant that operating it was itself a specialised skill.
Cultural Significance
The Mark II was a turning point in electronic music. By making it possible to specify all aspects of a musical sound from a written score-like input, it opened the door to composition styles that took advantage of computer-like precision. Milton Babbitt’s Composition for Synthesizer (1961) and Philomel (1964) are among the works most closely associated with the instrument. Although the Mark II was eventually superseded by smaller, more flexible synthesizers, it remains a foundational object in electronic music history. The instrument is preserved at Columbia University.
Related Instruments
- Telharmonium – an even earlier electronic-music attempt
- Novachord – a much earlier polyphonic electronic instrument
- ARP 2500 – a later modular synthesizer descendant
- Sequential Circuits Prophet-5 – a later programmable polysynth
- Doepfer A-100 – a modern modular descendant
Frequently Asked Questions
Was the RCA Mark II played in real time?
No. It was controlled by a punched paper tape that specified all musical parameters in advance.
Where is the RCA Mark II today?
It is preserved at Columbia University, the site of its long working life at the Columbia-Princeton Electronic Music Center.
Who composed for the RCA Mark II?
Milton Babbitt, Charles Wuorinen, Vladimir Ussachevsky, and other composers associated with the Columbia-Princeton centre.
Image: composite by Finnianhughes101 / Clusternote, CC0 (Wikimedia Commons).