Yipe-ki-yay

«Bebop was a high-frequency music that shot forward, then suddenly went mute in the middle of a melody chorus; it was highly aware of its own weight and shape. It didn’t have the conversational quality of swing playing, of Lester Young and the daddy of them all, Coleman Hawkins, unless you mean a conversation under the influence of amphetamines. Amphetamines properly accompanied bebop, as gin accompanied stride piano.»

Coltrane - the story of a sound, Ben Ratliff