Frogman, that was kind of sneaky the way you discussed both drug use and practicing, while suggesting we not discuss the subject any more.
I'm thankful that although we don't see drug use among jazz musicians, it is a serious problem in this country from North to South, and East to West. From time to time, we have wandered off the subject of music, and I have no objections to that.
Back to the subject of music, and special musicians; I had to laugh when "Bird" emphasized the aspect of schooling, like he had been to Juilliard School of Music. Of course schooling is important, but special people like him have done quite well without it, because they loved music and had the desire, drive, and ambition to succeed, even though school was unavailable due to economic reality.
In small "hard bop" jazz groups, spontaneity is the element that makes them sound so fresh. What they played depended on what was played just before their solo. Herbie Hancock told of the time he "goofed" and played wrong notes, but Miles came right behind him and made it come out beautiful.
In music, what ever the situation calls for, is the thing to do.
Enjoy the music.

