Antoine TISNÉ (1932-1998). Autograph musical manuscript, Temps spectral, 1982; [2]-88 leaves 35 x 27.5 cm. Orchestral score of this work for piano, two brass and wind ensembles, and two percussionists, commissioned by the State for the Concours international d'interprétation de la Musique contemporaine pour le piano de Saint-Germain-en-Laye. Lasting 20 minutes, it is divided as follows: Spectral time 1 (p. 1-13); Spectral time 2, Beams I to III (p. 13-33); Spectral time 3 (p. 34-54); Spectral time 4, Interfered beams 1 and 2, Reverberation 1 (p. 55-77); Spectral time 5 (p. 77-88) The manuscript is carefully written in Indian ink (with a few additions in black pen) on tracing paper with 26 lines; there are corrections by scratching; it is signed at the end and dated "Paris 1982".