クレメンティ Introduction to the Art of Playing the Pianoforte, Op.42

Clementi's Introduction to the Art of Playing on the Pianoforte Including the Elements of Music; Preliminary notions on Fingering with examples, and 50 fingered Lessons In the major and minor keys mostly in use by Composers of the first rank, Ancient and Modern. To which are prefixed short Preludes by the Author.