Chords: What Are Harmonic Subdominant and Dominant Chords?
Harmonic Subdominant and Dominants are chords built by adding extra accidentals that don't exist in the original key. How to find Harmonic Subdominants of a Major Key In a Major key, chord IV , or the triad built on the fourth scale degree, sounds Major. For example in the key of C Major , chord IV is F Major (triad - F,A,C). By turning this triad into MINOR (F,Ab,C) we get what we call a 'harmonic' subdominant. Chord II (i.e. chord built on the second scale degree) is also a subdominant, therefore can also be 'harmonic'. Let's say we take a seventh chord on the second scale degree (chord II7) in C Major. We have the notes D,F,A,C - which sounds like a minor seventh chord. If you alter the A to an Ab, you'll get a D half-diminished seventh chord, which is your harmonic II7! How to find the Harmonic Dominant of a minor Key In a minor key, chord V , or the triad built on the fifth scale degree sounds minor. For example in the key of a minor , chor...