That's wild. Jazz blows my mind! I've heard it said that it's fundamentally actually very tonal, in the sense that the underlying progressions are typically 2-

That's wild. Jazz blows my mind! I've heard it said that it's fundamentally actually very tonal, in the sense that the underlying progressions are typically 2-5-1. Which has always been hard for me to imagine :), but I guess it simply dispenses with the slavish dedication to a particular scale of the tonic. "A Geometry of Music", which I've linked to elsewhere in this thread, digs into jazz practice a lot.