Gerald Joseph Mulligan (April 6, 1927 – January 20, 1996), also known as Jeru, was an American jazz saxophonist, clarinetist, composer and arranger. Though primarily known as one of the leading jazz baritone saxophonists—playing the instrument with a light and airy tone in the era of cool jazz—Mulligan was also a significant arranger, working with Claude Thornhill, Miles Davis, Stan Kenton, and others. His pianoless quartet of the early 1950s with trumpeter Chet Baker is still regarded as one of ...