Great improvisers are like priests... they are thinking only of their God

Improvisation, it is a mystery. You can write a book about it, but by the end no one still knows what it is. When I improvise and I'm in good form, I'm like somebody half sleeping. I even forget there are people in front of me. Great improvisers are like priests they are thinking only of their god.

[Billy Strayhorn] understood the violin as well as he understood Jazz, and he wrote for the violin as a violin.