Dizzy's jazz genre is a combination of two styles: BOP (3 letters) and BEBOP (5 letters). BOP, also known as 'Rebop', was developed in the 1940s and is characterized by fast tempos, complex chord progressions, and improvisation. BEBOP, on the other hand, was developed in the 1950s and is characterized by its use of dissonant harmonies, intricate melodies, and syncopated rhythms. Both styles are considered to be some of the most influential jazz genres of all time.