Les Brown (1912-2001) was an influential American bandleader, saxophonist, and arranger, known primarily for his contributions to the big band and swing genres. He formed the Les Brown Orchestra in 1940, which gained prominence during the swing era and became one of the most popular dance bands in the United States. Notable works include the hit "Sentimental Journey," which helped launch the careers of many artists, including Doris Day, who recorded it with Brown's band in 1945. His orchestra was known for its smooth arrangements and engaging performances, often featuring vocalists like the Pied Pipers and later, Doris Day. Brown's impact on music extended beyond his recordings; he was instrumental in the big band sound that characterized the 1940s and influenced later developments in jazz and popular music. Throughout his career, he performed on radio and television, contributing to the popularization of swing music. His work paved the way for future generations of musicians and bandleaders, solidifying his legacy in American music history.