Understanding Tertian Triads And Seventh Chords
Tertian harmony describes music and chords constructed with thirds. Based on the diatonic scale, and the basic concept of intervals, these thirds are either minor (an interval of 3 semitones) or major (an interval of 4 semitones). Tertian harmony forms the 4 triads of music as well as 8* of the most common seventh chords. *There…