Open Culture: John Coltrane Draws a Picture Illustrating the Mathematics of Music. April 19, 2017 by Garret Vreeland in Arts, Music Coltrane makes my head hurt. When I listen to him, I have to concentrate with every fiber of my being. Usually with my head in my hands. Can't be distracted. Guy was a genius, but truly appreciating him takes WORK. For me, anyway. Thanks Dan!