 The chorale is the wedge shape, with each entry of the chorale being a fourth higher than the previous one, decorated by a contrapuntal theme that also derives from the wedge.The first section then goes headlong into a giant, Beethovenian scherzo that has a genuine sense of propelled, forward motion; a rare occurrence in modern music.The scherzo eventually climaxes before fading away, but not before first quoting from letter F of the first movement of Bruckner's Third Symphony (Simpson says so in a taped talk about the piece).