Gerry Mulligan, affectionately known as "Jeru," was a pioneering force in the world of jazz, renowned for his mastery of the baritone saxophone and his innovative contributions as a composer, arranger, and bandleader. Born in Queens, New York, in 1927, Mulligan's light and airy tone on the baritone sax became a defining characteristic of the cool jazz movement. His piano-less quartet with Chet Baker in the early 1950s is still celebrated as one of the finest cool jazz ensembles. Beyond his saxophone prowess, Mulligan was a skilled pianist and versatile reed player, known for his fluidity, speed, and lyricism. His compositions, such as "Walkin' Shoes" and "Five Brothers," have become jazz standards. Collaborating with legends like Miles Davis and Stan Kenton, Mulligan's influence spans cool jazz, bebop, and hard bop, making him one of the most respected and admired musicians in jazz history.