no kidding, this stuff really works! Crank-it-upable is RIGHT! the riff changes are so creative--they will drive home a declension several times and just before it gets tedious they change it, but a change at 45 degrees to the phrasing established--always surprising, never tedious and predictable. To the unaccustomed ear, it might seem tedious and repetitious, even simpl...but some of the most intriguing music is seemingly repetitious until you carefully examine the structure--I'm thinking of Balinese temple music, Gamelon--played on bronze drums. The mind really has something to chew on with that stuff!