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Varèse, Edgard (1883-1965)
Density 21.5 For Flute Alone. American Music Center: New York, 1946. First Edition of the 1946 revision. Quarto. 2 pp. As new.
This famous work for solo flute was composed in 1936 at the request of Georges Barrêre for the inauguration of his platinum flute and named for the density of platinum.