Manual describing musical composition for beginners. The manual is divided in 9 chapters and includes 479 musical examples engraved in 59 pages at the end of the book, as well as four plates with figures (plate no. II appears at the beginning of the book. The musical examples cover the following subjects: scales, intervals (diatonic and chromatic) and their inversion, counterpoint rules, harmonic progressions, use of non-harmonic tones (suspensions, passing notes, appoggiaturas, and upper-lower neighbor. It also includes several examples taken from Handel's "Dettingen Te Deum," "Messiah," and from Haydn's oratorio "Creation," among others.