The Czech composer Antonín Dvořák, a prominent figure of the Romantic era, is primarily known for his classical compositions and is not associated with jazz or popular music. His works, such as the "New World Symphony" and "Slavonic Dances," drew heavily on folk melodies and nationalist themes. While his melodies have been adapted and reinterpreted in various genres, Dvořák himself did not compose in the jazz or popular music idioms.