Look again at the F major scale. In A:3 Chords in root position, you learnt how to create primary chords on a major scale. You can also create chords on the notes of the supertonic and submediant.
ii = supertonic chord (G minor) vi = submediant chord (D minor)
In this component you will learn how to use chords ii and vi in root position, i.e.:
chord ii in F major is G-B♭-D
chord vi in F major is D-F-A
Click on this link to listen to the tune Llwyn Onn (The Ash Grove). The supertonic chord (ii) is used in bar 5 and the submediant chord is used in bar 6.
When composing, it is important that you rely on your ear to decide which chord sounds best with your tune. A perfect cadence is a very common way of completing a tune – look again at A4: Cadences. Here, you learn about ii-V-I (supertonic-dominant-tonic) which is very common progression at the end of a melody.
Click on this link to listen the traditional Welsh tune Ar Hyd y Nos (All Through the Night).
The ii-V-I progression can be used in the tune: