Harmony - Chords II & VI

The illustration (left) shows 2 new triads built on to the 2nd (II) and the 6th (VI) degrees of the scale. The triads you will already know are coloured in red (as the scale is) and the new triads are shown in black.

These new chords are both minor triads (Secondary Triads). The triads I, IV and V are major triads (Primary Triads) Here endeth the 1st lesson of harmony.

The new triads (chords) to the left (VI and II)

The upper octave (shown in brackets) is called a doubled root (or Bass) and this is the first thing to consider as we continue on to the next part  - Harmonising in 4 parts (SATB).