Guido Aretinus a Benedictine Monk, Having Reformed the Scale of Music and Invented a New Method of Notation, Communicates His Improvements to Pope John XX
Charles Grignion
n.d.
Charles Grignion
n.d.
Charles Grignion
1774
Charles Grignion
n.d.
Charles Grignion
n.d.
Charles Grignion
n.d.