\"The extensive patronage which is extended to the Musical Art by the American Public, and which has encouraged so many to apply themselves to the noble study of Musical Composition, may be pleaded as an apology for the appearance of a new treatise on Harmony. The present work, which has been compiled, and adapted for popular use, from the celebrated treatise by S. Sechter, entitled: Die richtige Folge der Grundharmonien, etc., aims solely to elucidate...