Willard A. "Bill" Palmer (1917–1996) – inventor of the quint system which was later patented by Titano as used in their line of "converter" (or "quint") bass accordions
Will Starr (1922–1976) – Scottish accordionist, technically a genius and a true master of the button key accordion, famous for his expertise at playing every genre of music. Described as the true "Master of the Button Key Accordion"
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