Hans Jenny a swiss doctor was influenced by Chladni`s work in cymatics, which is the study of sound and vibration made visible.

In 1967 she published the first volume of cymatics. The Study of Wave Phenomena documented several experiments performed by Jenny using sound frequencies on various materials including water, sand,

liquid plastic and iron filings.

    Many crystals are distorted by electric impulses and produce electric potentials when distorted. When a series of electric impulses are applied to the crystal, the resulting distortions will have the character of real vibrations. 

These crystals allowed for a whole range of experimental possibilities with the ability to display both frequency and amplitude. The oscillator is attached to the underside of the plate and when a frequency is outputted, the material on the plate generates a pattern.

Jenny then proceeded to invent the tonoscope, which was constructed to make the human voice visible. By singing into a pipe, the air passes through, causing vibrations on the black diaphragm, which has quartz sand evenly spread across it.

Hans Jenny stated that if you had the same frequency and the same tension, you would get the same form, with low tones generating simple patterns and high tones resulting in more complex designs.

The pattern is characteristic not only of the sound but also the pitch of the speech. Hans Jenny also used this device to visualise music, namely orchestral music such as Bach and Mozart.

    Thomas Wilfred was born in Denmark in 1889. Upon moving to New York in 1919, he co-founded the Promethans, who were a group dedicated to exploring spiritual matters through artistic expression.

Speaking of light as an art form, 1922 saw Wilfred invent the Clavilux, which was considered to be the first device designed for audio-visual shows.

    The Clavilux had six projectors, which were controlled by a keyboard consisting of banks of sliders, which would resemble a modern lighting desk. An arrangement of prisms would be placed in front of each light source. Wilfred mixed the intensity of colour along with a selection of geometric patterns.

    Although most of Wilfred`s performances with the Clavilux were presented in complete silence, it was not until 1926, that he collaborated with the Philadelphia Orchestra in the presentation of Rimsky-Korsakov’s Scheherazade.

    Thomas Wilfred produced roughly forty works before his death in 1968 but only eighteen pieces have since survived. The Clavilux was capable of creating complex light forms, which mix together to create a depth of light; this could be seen as resembling the northern lights in Iceland.

Influenced by Thomas Wilfred`s colour organ and Leon Theremins music, Mary Ellen Bute began to develop a kinetic visual art form. She produced several abstract animations set to classical music by Bach and Shostakovich.

    This was achieved by submerging tiny mirrors in tubs of oil and connecting them to an oscillator. With the production of these animations, Mary Ellen Bute said that she sought to “Bring to the eyes a combination of visual forms unfolding along with the thematic development and rhythmic cadences of music”.

She referred to some of her films as seeing sound and a few of Bute`s abstract films were shown at Radio City music hall and were often screened before Hollywood feature films. Center for Visual Music. (2014)

    In 1921 German, painter and filmmaker Walter Ruttmann created Opus 1. He assembled each projection print of the film with an old college friend who wrote the score. A string quintet performed live with each screening if Opus 1, which was shown in several cities across Germany. The abstract shapes moved onto the screen in time with the music, Ruttmann achieved this by drawing colour pictures in the musical score so musicians would be able to synchronise their playing with the film.

    Upon the attendance of a rehearsal of Opus 1 in Frankfurt, Oskar Fischinger decided to make visual music.         He started to experiment with slicing wax and clay images while using silhouettes combined with drawn animations.

Fischinger made some of his earlier films using a colour organ which was controlled by several slide projectors and stage spotlights that had changing colour filters and fading capabilities.

    In 1925 he designed a new colour organ with five projectors, which added a more complex layer of colour. Fischinger created wooden cubes and cylinders that were painted and coloured with fabric, that were projected on screen to create his films.

When moving to America, Fischinger created great works such as “An Optical Poem” which was set to the music of “Hungarian Rhapsody no.2” and “Motion Painting no. 1” set to the music of J.S Bach`s “Brandenburg Concerto no.3”.

When attending the “Art in Cinema Festival” in San Francisco in 1947, Fischinger met two painters who had been inspired by his work. Harry Smith painted directly on the filmstrip and the resulting film was accompanied by a jazz performance.

Jordan Belson, in 1957 began to choreograph visual accompaniments to new electronic music. Composer Henry Jacobs composed the electronic music while Belson created the visuals using multiple projection devices.

    In 1961 he began to create live visuals by the manipulation of pure light. Taking the role of a modern VJ, with his use of custom built optical bench with rotary tables, variable speed motors and lights of varied intensity, he would create live visuals to accompany electronic music.

Belson did not want any of his material uploaded online; therefore not many of his works are available. Norman Mc Laren was born in Scotland in 1914, while studying art and interior design at the Glasgow School of Art in 1933; he began to make short experimental films,

    Mc Laren wrote that while listening to music he would see abstract images in his mind and after watching his first abstract film in 1934, he discovered a way in which he could make these images in his head visible to others through film.

By painting onto film cells, he had the ability to display a visual representation of music.

    Incorporating a variety of musical styles into his films including Indian music by Ravi Shankar, Trinidadian string band and a jazz piano soundtrack by Oscar Peterson.

Mc Laren also used a technique he called “Animated Sound” by scratching directly onto the soundtrack of the film, he would create unusual electronic sounds and this can be heard in his film entitled “Blinkity Blank” from 1955.