La Harpe de Pleyel chromatique sans pédales (Système G. Lyon). Son Histoire par les Faits de 1897 à 1904 (Paris Pleyel Wollf Lyon et Cie, 1905)
The Pleyel chromatic harp has disappeared from schools all over the world, but it remains a fascinating instrument thanks to the ingenuity of its system and the great freedom it gives its performer. Invented in 1894 by Gustave Lyon, this harp has no pedals and a second set of strings that cross the first in the middle. It thus reproduces the arrangement of the black and white keys on a piano. It was created in response to demands for chromaticism from composers of the time.
Keywords: Lyon, Gustave -- 1857-1936; Pleyel et Cie (France); 19th Century (1801-1900); 20th Century (1901-2000); Organology; Harp; Music criticism; Correspondence; Music history