The Wicki-Hayden note layout: The notes of the major scale are together.
In music, the Wicki-Hayden note layout has the same advantage over the traditional keyboard layout as the 6-plus-6-system: There is the same fingering in all 12 scales. It is used for the Hayden duet concertina. Kaspar Wicki patented it in 1896 in Switzerland. Brian Hayden, a concertina player, refined this layout and patented it again in 1986 in Great Britain.
Images for kids
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Traditional Piano Keyboard (7–5) Color Scheme
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Strong Piano (7–5) and Subtle Whole Tone Scale (6–6) Color Scheme
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Minor Thirds Color Scheme (4–4–4)
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Whole Tone Scale (6–6) Color Scheme
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Strong Whole Tone Scale (6–6) and Subtle Piano (7–5) Color Scheme
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Major Thirds Color Scheme (3–3–3–3)