Throughout the 1940s, Dizzy created new pitches of sound, tone, and demonstrated strong virtuosity with his trumpet. He also had great range and a large amount of control of his trumpet. His suppleness of rhythm, unevenly spaced phrases and complex, chromatically augmented runs played at breathtaking speed also described his playing style. Numerous people, from all generations, consider him the greatest trumpeter of them all. He along with other jazz musicians established bebop as a style of jazz for both small combos and big bands. He taught and influenced many other musicians including trumpeters Miles Davis, Fats Navarro, Clifford Brown, Lee Morgan, and John Faddis.
In addition to his instrumental skills, Dizzy's beret and horn-rimmed spectacles, his scat singing, his bent horn, pouched cheeks and his light-hearted personality were essential in popularizing bebop. He had an enormous impact on subsequent trumpeters, both by the example of his playing and as a mentor to younger musicians.