Jazz tuba is a subgenre of jazz that features the tuba as a lead instrument. It is characterized by its deep, rich sound and the use of the instrument in both melodic and rhythmic roles. Jazz tuba players often employ a range of techniques, including plucking and slapping the strings, to create a unique and dynamic sound. Jazz tuba has been a significant part of jazz music since the early 20th century and continues to be an important part of the genre today.