Which of the following musicians is associated with the swing era?

Duke Ellington is a pivotal figure in jazz music, particularly known for his contributions during the swing era, which spanned the 1930s and 1940s. His sophisticated compositions and arrangements helped define the big band sound typical of this period. Ellington was not only a talented bandleader but also a prolific composer whose works incorporated elements of blues and classical music, showcasing the versatility and cultural richness of jazz. He played a crucial role in elevating jazz to a respected art form and is remembered for his innovative approach to orchestration and performance. His ability to blend intricate melodies with engaging rhythms and improvisational elements made him an essential figure in the history of swing music, making him a fitting answer to the question regarding musicians associated with this era.