Piano-orphéon
Piano-orphéon *transposing piano patented in France in 1865 by Roz (204). Wright, Rowland. Dictionnaire des instruments de musique. London, 1941.
Piano-orphéon *transposing piano patented in France in 1865 by Roz (204). Wright, Rowland. Dictionnaire des instruments de musique. London, 1941.