A jazz musician is an artist who plays or composes music in the jazz genre, which originated in the early 20th century in the United States. Jazz is characterized by its use of improvisation, syncopated rhythms, and distinctive melodies. Musicians often perform with instruments such as the saxophone, trumpet, piano, and double bass, creating a unique sound that can vary widely from one performance to another. Jazz musicians can be found in various settings, from small clubs to large concert halls. They often collaborate with other musicians, forming bands or ensembles to create a rich tapestry of sound. Notable jazz musicians include Louis Armstrong, Duke Ellington, and Miles Davis, each contributing significantly to the evolution of jazz music.