Question: What electronic musician released the album The Well-Tempered Synthesizer in 1969?

Context paragraphs:
Electronic music: Electronic music is music that employs electronic musical instruments, digital instruments and circuitry-based music technology.  An electronic musician is a musician who composes or performs such music.  In general, a distinction can be made between sound produced using electromechanical means, such as violins and drums, and that produced using electronic technology.  Electromechanical instruments include mechanical elements, such as strings, hammers, and so on, and electric elements, such as magnetic pickups, power amplifiers and loudspeakers. Examples of electromechanical sound producing devices include the telharmonium, Hammond organ, and the electric guitar, which are typically made loud enough for performers and audiences to hear with an instrument amplifier and speaker cabinet.  Pure electronic instruments do not have vibrating strings, hammers, or other sound-producing mechanisms.  Devices such as the theremin, sound synthesizer, and computer can produce electronic sounds.

Electronic Sound: Electronic Sound is the second studio album by English rock musician George Harrison.  Released in May 1969, it was the last of two LPs issued on the Beatles' short-lived Zapple record label, a subsidiary of Apple Records that specialised in the avant-garde.  The album is an experimental work comprising two lengthy pieces performed on a Moog synthesizer.  Harrison subsequently introduced the instrument to the Beatles' sound, and the band featured synthesizer for the first time on their 1969 album "Abbey Road".

Switched-On Brandenburgs: Switched-On Brandenburgs is a 1979 double album by Wendy Carlos.  It was the seventh album released by Carlos, and the fourth album in her project of classical music which also included "Switched-On Bach" (1968), "The Well-Tempered Synthesizer" (1969), "Switched-On Bach II" (1974), and "Switched-On Bach 2000" (1992).

Traditional Synthesizer Music: Traditional Synthesizer Music is a studio album by Canadian electronic musician Venetian Snares, announced 17 December 2015 and released 19 February 2016 on Planet Mu records.  Unlike other albums by Venetian Snares, this album was composed and live recorded entirely on modular synthesizer equipment.

Matthew Yee-King: Matthew Yee-King, is an electronic musician, percussionist and researcher based in London, performing music as Yee-King.  He is known for bringing an education in science and genetics into music, including his celebrated 2001 Drill 'n' bass release SuperUser released by Rephlex Records, his work with Finn Peters in making music from brainwaves, and his doctoral work on applying Artificial intelligence techniques to automatic synthesizer programming.  "Goodnight Toby", a track from SuperUser, was listed in the top 100 greatest IDM tracks by FACT magazine.

Felix Kubin: Felix Kubin (born Felix Knoth, 1969 in Hamburg, West Germany) is an electronic musician.  He has been involved with music since he was 8 years old, when he studied piano, organ and glockenspiel.  His youthful experiments really took off in 1980 when he got a Korg MS-20 synthesizer.  His early works have been released under the title "The Tetchy Teenage Tapes of Felix Kubin".  During this time he also played in a punk band Die Egozentrischen 2.  In 1987 Felix Kubin co-founded an experimental noise group Klangkrieg with Tim Buhre.  His first solo album "Filmmusik" was released in 1998 by Gagarin Records, Kubin's own label founded in the same year through which he has gone on to release a series of albums including the critically acclaimed Matki Wandalki in 2004.

Wendy Carlos: Wendy Carlos (born Walter Carlos; November 14, 1939) is an American musician and composer best known for her electronic music and film scores.  Born and raised in Rhode Island, Carlos studied physics and music at Brown University before moving to New York City in 1962 to study music composition at Columbia University.  Studying and working with various electronic musicians and technicians at the city's Columbia-Princeton Electronic Music Center, she oversaw the development of the Moog synthesizer, then a relatively new and unknown keyboard instrument designed by Robert Moog.

The Inhuman Condition: The Inhuman Condition is the first solo studio release by Sam Roberts, a Canadian musician released in 2002.  The tracks featured reworked versions of his demo "Brother Down" together with producer and percussionist Jordan Zadorozny.  The EP peaked at #32 on the Canadian album chart after just nine weeks of being released.  This is due mainly to the success of the first single, "Brother Down".  The follow-up single, "Don't Walk Away Eileen", further increased the popularity of the EP in the winter of 2002-2003.  The album has sold over 50,000 copies and has been certified Gold in Canada.  Pitchfork describer the EP as "a sturdy, respectable and, intermittently, even thrilling first effort from an artist who has much to say".  In 2013 the EP was re-released on vinyl through Paper Bag Records.

The Well-Tempered Synthesizer: The Well-Tempered Synthesizer is the second studio album from the American musician and composer Wendy Carlos, originally released under her birth name, Walter Carlos, in November 1969 on Columbia Masterworks Records.  Following the success of her previous album, "Switched-On Bach" (1968), Carlos proceeded to record a second album of classical music performed on a modular Moog synthesizer from multiple composers, including Johann Sebastian Bach, Claudio Monteverdi, Domenico Scarlatti, and George Frideric Handel.  Its title is a play on words from Bach's set of preludes and fugues named "The Well-Tempered Clavier".

Lee Spencer: Lee Spencer (born Lee Alan Spencer-Todd in 1963) is an English electronic musician, music theorist and record producer.  As a solo artist, he is probably best known as the creator of Cavewaves a collection of ambient new age albums.  Lee first came to prominence as the keyboard and freestyle analogue synthesizer player for such artists as Beth Orton, William Orbit, and as a founder member of The Dub Pistols, and Monkey Mafia, and a band member with guitarist Johnny Marr (formerly of The Smiths), soundscape production and keyboards for Michael Brook.  Now living in Australia performing and producing music and inventing new art using 3D synthesis to create solid representations of music and sound.

Supporting paragraphs: The Well-Tempered Synthesizer Wendy Carlos
Answer: Wendy Carlos