It was 1974, and Don Lewis was getting tired of hauling around so many keyboards. One day he would be in a studio in Los Angeles, working alongside Quincy Jones. A week later, he might be on tour as a member of the Beach Boys’ backup band. Or he might be performing his own gigs, shuffling up and down the West Coast with an ever-growing assortment of keyboards and other equipment.
He could have just taken his trusty Hammond Concorde organ, itself not a small item. But Mr. Lewis was an aural explorer, constantly on the hunt for new sounds. If he found a keyboard with a particular tone to it, he had to add it to his collection. He was a one-man band; he aspired to be a one-man orchestra.
His problem was about more than sheer weight. Each instrument had to be controlled separately, and there was no industry standard for integrating them. An electrical engineer by training, he decided to strip them down for parts and build something new.
It took him three years of designing and fund-raising, but in 1977 he finalized the Live Electronic Orchestra, commonly known as the LEO.
https://tnewsline.com/2022/12/13/science/don-lewis-unsung-pioneer-of-electronic-music-dies-at-81/
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