J.J. Johnson (1924–2001) was an influential American jazz trombonist, composer, and arranger, primarily associated with the bebop and hard bop genres. He is widely regarded as one of the first trombonists to embrace bebop, significantly elevating the instrument's role in jazz. Notable works include albums like "The Eminent Jay Jay Johnson, Volume 1" (1953) and "The World of J.J. Johnson" (1968), as well as his compositions such as "A Waltz for Debbie" and "Lament." Johnson was also known for his collaborations with other jazz greats, including Dizzy Gillespie, Miles Davis, and Thelonious Monk. J.J. Johnson's impact on music is profound, as he helped to redefine the trombone's capabilities in jazz, showcasing its potential for complex improvisation. His innovative techniques and compositions have influenced generations of musicians, solidifying his legacy as a key figure in the development