Charles CHAYNES (1925-2016). Autograph music manuscript signed, Joutes for harpsichord and organ; 23 leaves 35 x 27 cm. These Joutes for harpsichord and organ were premiered on August 23, 1975 at the Festival d'art contemporain de Royan by Xavier Darasse on organ and Élisabeth Chojnacka on harpsichord, who were the dedicatees. The manuscript is carefully notated in Indian ink on 24-line Neocopy music tracing paper, generally in systems of 3 and 2 staves; it is signed at the end. The work, which lasts about fifteen minutes, opens with an introduction (p. 1-8); it is followed by: Joute I (pp. 9-15), Joute II (pp. 16-17, each instrument presented on a separate page, with the note: "After the organ's 'call', each instrument must choose (from among the proposed patterns) the 'answer' to its partner"), Interlude II (pp. 18-19), Joute III (pp. 20-21, each instrument presented on a separate page, then 22-23). Attached is the 1st page of corrected proof.