For any given Key, the Béla Bartók¿s axis system allows us to clasify the 24 Major and minor chords into 3 groups of 8 chords: one group having the Tonic function, another the Dominant function and the other the Subdominant ...

The harmonic series of a sound consists of multiples of the fundamental frequency or overtones, which leads directly to the concepts of dominant and major chord. By using an analogy, a supposed undertone series has sometimes ...