1. Add MS 53761 Reference (shelfmark): Add MS 53761 Title: Scope & Content: APIVOR MANUSCRIPTS. Vol. XXIII. 'Mutations', five pieces for cello and piano, op. 34; 1962. Score. The twelve tone row on which the work is based is given on f. 1v. ff. 18. Overall size 365 x 270mm. Collection Area: Music Collections Languages: English Date Range: 1962 Extent: 1 item