Harmony
a union of sounds which heard together form a collective sound called a chord. All musical compositions can be reduced to a fundamental harof successive chords, which, in their progression , are regulated by the rules of the theory of music. Dissonant as well as consonant chords are included of several sounds that have but one as forming harmony, as they are a union fundamental sound or bass note in combe close or open, which the position or The harmony of chords can either distance of the sounds or intervals from mon.
HARNACK one to another, forming the chords, determines. Close harmony is when the sounds composing each chord are placed so near to each other that no sound belonging to the chord could again be interposed between any of those already present. Open harmony is when the sounds of a chord are placed at a greater distance from each other, so that some of them might be again in again interposed between the parts of those sounds already present. The common chord of a third , fifth and octave to a bass note is the most pure and perfect harmony; after which follow the chord of the seventh and the chord of the ninth.