Widely regarded as "one of jazz's finest clarinetists", Shaw led one of the United States' most popular big bands in the late 1930s through the early 1940s. Though he had numerous hit records, he was perhaps best known for his 1938 recording of Cole Porter's "Begin the Beguine." Before the release of "Beguine," Shaw and his fledgling band had languished in relative obscurity for over two years and, after its release, he became a major pop artist within short order. The record eventually became one of the era's defining recordings. Musically restless, Shaw was also an early proponent of what became known much later as "Third Stream" music, which blended elements of classical and jazz forms and traditions. His music influenced other musicians, such as Monty Norman in England, with the vamp of the James Bond Theme, possibly influenced by 1938's "Nightmare".