Photoelectric organ

Claim 1

A TONE DISC ASSEMBLY, COMPRISING A FIRST AND SECOND ROTATABLE VARIABLE TRANSLUCENCY TONE DISC, EACH OF SAID TONE DISCS INCLUDING OPAQUE AREAS REPRESENTING A PLURALITY OF TONE TRACKS OF DIFFERENT NOMENCLATURE, AN APERTURE PLATE OPERATIVELY ASSOCIATED WITH EACH OF SAID TONE DISCS, SAID TONE DISCS LOCATED BETWEEN SAID APERTURE PLATES, SAID APERTURE PLATES EACH INCLUDING AT LEAST ONE APERTURE OPERATIVELY ASSOCIATED WITH EACH OF SAID TONE TRACKS, A PLURALITY OF DISCRETE SOURCES OF LIGHT, EACH OF SAID SOURCES OF LIGHT BEING LOCATED ADJACENT ONE OF SAID APERTURES, PHOTOELECTRIC CELLS, SAID CELLS, APERTURES, TRACKS AND DISCRETE SOURCES OF LIGHT BEING RELATIVELY SO LOCATED THAT LIGHT FROM EACH SOURCE OF LIGHT TRAVELS TO ONE OF SAID PHOTOELECTRIC CELLS VIA ONE ONLY OF SAID APERTURES AND ONE ONLY OF SAID TRACKS IN THE ORDER STATED, WHEREIN SAID TONE DISCS ARE CONCURRENTLY DRIVEN BY A SINGLE SHAFT, ONE OF SAID TONE DISCS HAVING ONLY TRACKS REPRESENTING AT LEAST FIVE OCTAVES OF TONES OF EACH OF A FIRST AND SECOND NOMENCLATURE, THE OTHER OF SAID TONE DISCS HAVING ONLY TRACKS REPRESENTING AT LEAST FIVE OCTAVES OF TONES OF EACH OF A THIRD AND FOURTH NOMENCLATURE, SAID FOUR TONES BEING IN IMMEDIATE SUCCESSION IN THE MUSICAL SCALE AND EACH TONE TRACK BEING RECORDED IN AN INTEGRAL NUMBER OF WAVE LENGTH REPRESENTATIONS, TRACKS REPRESENTING TONES OF EACH SINGLE NOMENCLATURE ON EACH OF SAID TONE DISCS BEING LOCATED IN A GROUP IN CLOSE PROXIMITY TO ONE ANOTHER, AND SEPARATE GROUPS BEING RELATIVELY WIDELY SEPARATED ON SAID TONE DISCS, AND MEANS FOR SELECTIVELY READING OUT SAID TRACKS, SAID MEANS INCLUDING KEY SWITCH MEANS FOR SELECTIVELY ACTIVATING SAID SOURCES OF LIGHT TO SELECTIVELY ILLUMINATE SAID TRACKS.