[Music Iconography] Degas, Edgar. (1834 - 1917) & Thornley, Georges William. (1857 - 1935) Répétition ("The Rehearsal"), 1888Lithograph printed in pink on Chine appliqu, circa 1888, signed in pencil by both Degas and Thornley, lower margin, a rare artist's proof impression from the edition of 25, before the lithographic signature and the publisher's address was added, published in Quinze Lithographies d'Apres Degas par G. W. Thornley, by Boussod, Valadon & Cie., Paris. Chine appliqu supported on gray toned stiff wove paper. Lithograph measures 8 x 10. 25 inches (20. 5 x 26