MS Mus. 332. Alan Bush Collection. Vol. vii. Short score, in ink. The movements are headed ‘Prologue’, ‘II’, ‘III’, ‘IV’; in the full score, they are renumbered as ‘Prologue’, ‘I’, ‘II’, ‘III’. With a chart showing the tone-row and its permutations (f. 2), and three pages of drafts, in pencil (ff. 3...