Example 13. Tonal suggestiveness of Babbitt’s four-lyne all-partiton array row: the entire 7-note A major scale, and with continuous segments that assert or suggest V7, IV7, and I in that key. (In retrograde, this produces a grammatical cadential progression: I–IV–V.) And order positions 4 through 9 form the A-major Guidonian hexachord ut re mi fa sol la. The inversion of the row enables a ii–V–I progression, the most standard progression in jazz and American popular song.