Dizzy Gillespie 1947. He and his big bands, with arrangements provided by Tadd Dameron, Gil Fuller, and George Russell, popularized bebop and made him a symbol of the new music. His big bands of the late 1940s also featured Cuban "rumberos" Chano Pozo and Sabu Martinez, sparking interest in Afro-Cuban jazz. He appeared frequently as a soloist with Norman Granz's Jazz at the Philharmonic. In 1948, Gillespie was involved in a traffic accident when the bicycle he was riding was bumped by an automobile. He was slightly injured and found that he could no longer hit the B-flat above high C. He
Tritone substitution Tritone substitution The tritone substitution is one of the most common chord substitutions found in jazz and was the precursor to more complex substitution patterns like Coltrane changes. Tritone substitutions are sometimes used in improvisation—often to create tension during a solo. Though examples of the tritone substitution, known in the classical world as an augmented sixth chord, can be found extensively in classical music since the Renaissance period, they were not heard until much later in jazz by musicians such as Dizzy Gillespie and Charlie Parker in the 1940s, as well as Duke Ellington, Art Tatum, Coleman Hawkins, Roy Eldridge