American trombonist and bandleader Si Zentner (1917–2000) rose to prominence in the big band era, known for his smooth, swinging sound. After a successful career as a sideman with Tommy Dorsey and Harry James, he formed his own orchestra in the late 1950s, achieving commercial success with instrumental pop and jazz arrangements. Zentner's band was a fixture in Las Vegas and on television, contributing to the enduring popularity of big band music.