Félix IBARRONDO (born 1943). Autograph musical manuscript signed, Erys, 1984-1985; II-70 sheets 55 x 37.5 cm. Orchestral score of this piece premiered on November 22, 1986 at Radio-France by the Nouvel orchestre philharmonique, conducted by Arturo Tamayo. Lasting 17 minutes, it is written for 3 flutes, 3 oboes, 3 clarinets, 2 bassoons (and contrabassoon), 4 horns, 3 trumpets, 3 trombones, tuba, 3 percussionists, harp, and strings. The manuscript is carefully written in Indian ink on tracing paper with 42 lines. It is signed and dated at the top "IV-84/II-85". On the back of the title, the composer has listed the instruments and the three percussion desks. There are many traces of correction by scratching.