Gilbert DUPREZ (1806-1896). Autograph music manuscript signed, Daphnis et Chloé, opéra-pastorale en un acte, 1867-1869; 198pages oblong in-folio (26.5x34.5cm), bound in black half-chagrin (period binding, worn). Complete manuscript of an unpublished opera, with orchestral score. The manuscript, in brown ink on 14-line oblong Lard-Esnault paper, is dated 1867 on the title page; at the end of his manuscript, Duprez inscribed: "Partition originale orchestrée du 24 9bre au 20 Xbre 1869". This "opéra-pastorale" is based on the fable of Longus, with lyrics by his brother Édouard Duprez (1804-1879). It opens (p. 1-19) with a "Symphonic Prelude" (flute, oboe, clarinets, bassoons, 2 horns, piston, and strings). Next: - Récit et cavatine de Myrtal (p. 20-41); - Récit et couplets de Chloé (p. 42-50); - Scène et Duo Daphnis-Chloé (p. 51-94); - Chœur des Pirates (p. 95-114); - Duettino Chloé-Myrtal (p. 115-135); - Scène et air (Désespoir) de Daphnis (p. 136-160); - Les Nymphes, Trio (p. 146-180): - Scène dernière Chloé-Daphnis (p. 181-198). The work remains unpublished, and does not appear to have been catalogued.