Guard was aware that among the Kingston Trio , he was the only one who could read music .
Who had some understanding of music theory ; one 's 's partners basically played by rote , and the three of them sang in simple three - part harmony .
Guard was aware that among the Kingston Trio , he was the only one who could read music and who had some understanding of music theory ; his partners basically played by rote , and the three of them sang in simple three - part harmony .