Degree

Triads: Primary, Secondary, Progressions, Cadences, and Harmonizing

Primary Triads		Secondary Triads				Relation to Primary			Comment
I		vi				3^rd below			Secondary triads are used as substitutes for primary triads for tonal variety.
IV		ii				3^rd below
V		iii				3^rd below
		vii°				3^rd above
Opening Progressions				Completion Progressions				Basic Harmonic Phrases
I-V				V-I				I-V-I
I-IV				IV-I				I-IV-I
(I) IV-V				V-I				I-IV-V-I
Cadences							Description
Authentic	Plagal		Half		Deceptive		Cadences are melodic-harmonic formulas which bring phrases to a more or less distinct close.
V-I	IV-I		I-IV		V-vi
vii°-I			ii-V

Degree	Triads for Harmonizing Degrees	Chords for a Degree
1 (8) (I)	I, vi, IV	I – I, iii, V vi – vi, I, iii IV – IV, vi, I
2 (ii)	ii, vii, V	ii – ii, IV, vi vii - vii, ii, IV V - V, vii, ii V7 – V, vii, ii, IV
3 (iii)	iii, I, vi	iii – iii, V, vii I – I, iii, V vi – vi, I, iii,
4 (IV)	IV, ii, vii	IV – IV, vi, I ii – ii, IV, vi vii – vii, ii, IV V7 – V, vii, ii, IV
5 (V)	V, iii, I	V – V, vii, ii iii – iii, V, vii I – I, iii, V
6 (vi)	vi, IV, ii	ii – vi, I, iii IV – IV, vi, I ii – ii, IV, vi
7 (vii)	vii, V, iii	iii – vii, ii, IV V – V, vii, ii iii – iii, V, vii V7 – V, vii, ii, IV