36. Ornette Coleman Quartet
Like Gerry Mulligan, Coleman got rid of the piano, but he went much further by also dispensing with regular chord changes. It pretty much goes without saying that his quartet with Don Cherry, Charlie Haden, and Billy Higgins belongs on the short list of utterly revolutionary jazz groups, but we’ll say it again anyway. All of this band’s output is worth your time, but you may as well start with 1960’s Change of the Century (Atlantic), which features, in “Ramblin’” and “Una Muy Bonita,” some essential foundation stones of the Ornette catalogue.