Alain BANCQUART (born 1934). Autograph musical manuscript signed, "Explosante fixe..." for harp solo and wind quintet, [1972]; title and 39 leaves 37.5 x 27 cm. Score for harp and wind quintet, premiered by the harpist Marie-Claire Jamet and the Quintette André Rabot in Aix-en-Provence in 1972. The work lasts about 19 minutes and is in three parts: I (p. 1-10), II (11-35), III (36-39). The manuscript is carefully written in Indian ink on 22-line tracing paper. At the same time, and under the same title borrowed from André Breton's L'Amour fou, Pierre Boulez began work on a work that would undergo several versions, from 1972 to 1993.