Predominant – Dominant – Tonic   (a very common progression) Theory Things   William Wieland
Predominants DominantsTonic
ii
ii6
 
ii7
 
ii6
5
IV
IVii(any)
vi
vi7
 
V
V7
 
viio6
 
– V
I6
4
– V
I6
4
– V7
 
 I
S – D – T stands for Subdominant – Dominant – Tonic (almost the same thing)