Glenn Miller was an American trombonist, arranger, composer, and bandleader who became one of the most iconic figures of the swing era. Leading the Glenn Miller Orchestra, he defined the sound of the late 1930s and early 1940s with smooth, meticulously arranged hits like “In the Mood” and “Moonlight Serenade.” His distinctive blend of clarinet-led reeds and muted brass created a timeless style that captivated audiences worldwide. Miller’s innovative approach and enduring melodies continue to influence jazz and big band music long after his disappearance in 1944.