we're learning stuff around this area in harmony at uni and it's going way over my head cos it's really quick and i don't have anything to practice on. can someone recommend some kind of theory book that explains anything to do with this stuff well and has practice questions in recognising and writing them that would be available in sydney?? thanks!
Non-harmonic tones are tones without a harmonic function. They are never part of chords, they do not contribute to harmonic movement. Often they are melodic decoration.Seventh chords are chords with 4 notes. A triad chord has a root, a third and a fifth. A seventh chord stacks one more third on top of that to get a seventh.A dominant chord is used to mean two things. Its either the chord on the fifth degree(the V) in a key. Or its a seventh chord with a major third and a minor seventh. (Dom7 meaning dominant seventh)Because in the major key the fifth degree has a dom7 as the seventh chord these terms are linked. The seventh note of the major scale is called the leading tone. This is because it leads strongly to the tonic, the first note of the key. In C major the B is the leading note. Notice the leading tone is always the key right next to the tonic key on the keyboard. Its just below/to the left of the tonic note/key.In the chord on the Fifth(V) degree in major, the third of that chord is the leading note. The G major triad chord is G B D where the B is leading strongly to C, the tonic. No note leads so strong as the leading note, thus the name.A secondary dominant is the dominant of the dominant. In C major, the C chord is the tonic(I) chord. G is the dominant chord(V). From the I its a perfect fourth up to the V. If we take the G chord(V) and count up a perfect fourth we get to the note D. Normally C major has a Dm chord. But in the key of G major we have a D chord. D is the V in the key of G major. D to G is like G to C. Both are a pair of V and I chords. So a D chord resolving to a G chord in a C major piece of music is called a secondary dominant. Often for more strenght a D7 chord is used(dom7 chord). So D7-G7-C.In roman numbers its common to notate this as V7/v - V7 - I You can add SD's(secondary dominants) to almost every degree in your key. You can have V/iii, V/ii, V/vi. Note, the V of IV is build on the I degree, and the V of vii is also not common. Both are still possible, but they could be called a bit more problamatic.(everyone who is confused don't read any further)Allchopin, I think you should consider what you wrote. The seventh in a seventh chord is not what you call a Non Chord Tone(/note). Also, a note not belonging to a chord is not a sign of a seventh chord. Now if you see four different notes aligned vertically, not that is a sign of a seventh chord. But it still could be something else, for example, not a chord at all.Chords with four notes are just as much chords as triadic chords. If we get ninth chords and above it gets different because very often one note is left out. A thirteenth chord with all seven notes will be rare.