In Vienna, Mozart introduced several students to the basics of musical composition. The preserved and corrected compositional exercises prove him to be a skilled teacher with a systematic foresight and a methodical talent. This book analyzes the principles of Mozart's teaching and reconstructs Mozart's position between former figured bass theory and modern harmony theory by contextualizing it in relation to contemporary instructional works. The Kurze Generalbass-Lehre± published posthumously under the name of Mozart and regarded so far as inauthentic, follows Mozart's basic teaching principles: thus, its authenticity cannot be completely ruled out any longer. It is printed and explained in this book in comparison with the related figured bass theory of Mozart's contemporary Johann Georg Albrechtsberger