Gillespie's genre is a combination of two musical styles: BOP (3 letters) and BEBOP (5 letters). Dizzy Gillespie was an influential jazz trumpeter, composer, and bandleader who is credited with popularizing the BEBOP style in the 1940s. He combined elements of swing music with the more complex rhythms of BOP to create a unique sound that became known as BEBOP. Gillespie's genre was a major influence on the development of modern jazz.