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Musical equipment enabling a fixed selection of digitals to sound different musical scales
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Key signature actuator for a musical keyboard
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Apparatus for musical scale selection and key signature actuation
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Key signature actuator for a musical keyboard
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Electronic musical instrument
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Electronic musical instrument
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Internal combustion engine
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Internal combustion engine
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Internal combustion engine
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Musical apparatus
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Electronic musical instrument
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Electronic musical instrument
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Electronic musical instrument
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Electronic musical instrument
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Keyboard type musical instrument
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Keyboard type musical instrument
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Keyboard type musical instrument
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Keyboard-type musical instrument
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