This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1845 edition. Excerpt: ...2. No two parts are allowed to move to an unison by similar motion. j 3. No two parts are allowed to move in octaves by similar motion. 4. The extreme parts may not proceed by similar motion to an octave excepting in passing from concord to concord, where the chords are either the dominant and tonic, or tonic and subdominant, the octave being either the root or fifth of the chord, and the upper part moving only a second. Ex. l. A A A C A A A In passing from discord to concord, the discord must be derived from the dominant, supertonic, or tonic root, and the concord must be either tonic, dominant, or subdominant, common chord, either in their original position or second inversion; in the case of the concord being in its original position, the upper part moving only a second (Ex. 2); in the case of the common chord being in its second inversion, the upper part may rise a fourth, the bass, in this case, moving only a second (Ex. 3). In passing from concord to discord, the concord must be derived from tonic, dominant, or subdominant root, and the discord from dominant, supertonic, or tonic, the upper part moving by skip, and the octave being the root of the chord. Ex. 4. i In passing from discord to discord, each discord must be derived from either dominant, supertonic, or tonic root, the octave being the root of the chord. Ex. 6. 5. Octaves by contrary motion in the extreme parts, are allowable in the same cases as those in which it is allowable to come on an octave from another interval in the extreme parts by similar motion, with this sole difference, that the progression of the upper part is in no case limited to a second. Ex. 6. 6. Fifths by similar motion are generally to be avoided, but they may (even Ex. 8. Beethoven. Weber. 7. In the...
