Contour. With a repeated prefix (A5 = -1), the melody establishes a registral floor (D6 = 0), moves rapidly to its highest point (A6 = 3), then descends through all the pitches available within the prevailing D-E-G-A harmony (G6 = 2; E6 = 1; D6 = 0). The overall melodic shape can thus be thought of as <0 3 2 1 0>.