Jazz is the type of music characterized by rhythm, improvisation, and swing. Originating in the early 20th century in New Orleans, jazz has roots in African American musical traditions, incorporating elements of blues, ragtime, and gospel music. Its defining features include syncopated rhythms, distinctive melodies, and the freedom of individual expression through improvisation. Jazz has produced numerous sub-genres, such as bebop, smooth jazz, and fusion, each contributing to its evolution. Great musicians like Louis Armstrong, Duke Ellington, and Miles Davis have shaped jazz's rich legacy, making it a vital part of American culture and influencing many other music styles worldwide.