The expression "Musical Forms" is often used, somewhat carelessly and erroneously, with reference to Styles or Species of composition, instead of to the structural design upon which the music is based. The "Barcarolle," "Mazurka," "Étude," "Anthem," and so forth, are styles of composition, and not necessarily identified with any of the structural designs we have been examining. Read, again, our FOREWORD. The general conditions which enter into the distinctions of style are enumerated in my "Homo ...