In the Hollywood the sublime duels of the black saxophone players Dexter Gordon and Wardell Gray were recorded in June 1947. They shared the cult of Lester Young with there white colleagues, but their sound was more expressionistic, the flow of their phrases more consistent with the demands of bebop, and their intention more aggressive. When they gave themselves fully to the indolence of phrasing 'like Lester', they did so with much more sensuality.
On the other hand, other black musicians, on the West Coast and elsewhere, developed a taste for muffled and refined tones. When 'hard bop' which arose in the 1950s, was at its hottest, Miles Davis was continuing to cultivate a restrained cool style of playing. What he obtained, however, was not so much an effect of relaxation as impression of controlled violence that would provoke a feeling of tension in the listener.