Nikolai Rimsky-Korsakov · section 12 of 96
Harmonic and Melodic Connection of Triads
Read and hear this section in the playable edition →§ 11. 1) Chords on different degrees can be connected a) harmonically, when the note common to both chords stays where it is; or b) melodically, when all the parts move.
2) In both harmonic and melodic connection, the three upper parts must move by no more than a third, so as to obey the rule that only the root is doubled.
3) Chords related by a fourth or fifth can be connected harmonically or melodically without close spacing becoming open or open becoming close.


4) The moving upper parts must proceed in similar motion; where they rise in a harmonic connection, they fall in the melodic one, and the reverse.
5) Chords related by a second are always connected melodically, since they have no note in common.
6) The three upper parts move in parallel and in contrary motion to the bass; the spacing stays the same, close or open.

7) Chords related by a third are connected harmonically or melodically.
8) Connected harmonically, they keep their close or open spacing; connected melodically, close spacing becomes open and open becomes close.

