Module 4 — Triads, Inversions, and Voice Leading
This module is where harmony starts to feel good under your hands.
So far, we have mostly treated chords as stacks:
- C = C–E–G
- Am = A–C–E
- F = F–A–C
- G = G–B–D
That is useful for understanding chord construction, but if you play every chord in root position, accompaniment often sounds clunky.
The key idea now is:
A chord can keep the same identity even when you rearrange the order of its notes.
That gives us inversions.
And once we use inversions to minimize unnecessary movement, we get voice leading.
4.1Root positionTake C major:4.2First inversionTake C major:4.3Second inversionStart again:4.4Same thing for minor chordsA minor:4.5Why inversions matterNow play:4.6Think of each chord note as a singerImagine three singers.4.7Common tones are your friendsCompare C and Am:4.8Voice leading in I–vi–IV–VLet's use:4.9This sounds more professional immediatelyTake a familiar pop progression:4.10Left hand and right hand can divide the chordOnce your left hand is playing the root, your right hand does not always need the root too.4.11Why low chords can sound muddyPlay a low C–E–G with the left hand, very low on the keyboard.4.12Open voicingsInstead of:4.13The bass note affects how the chord feelsPlay:4.14Create a smooth bass line with inversionsTake:4.15Slash chordsThis is where notation like:4.16Slash chord does not always mean inversionUsually it does.4.17Voice leading in ii–V–INow let's apply this to the most important jazz progression:4.18The 3rd and 7th are especially importantFor seventh chords, two notes tell you most of the chord's harmonic character:4.19Shell voicingsA pianist does not always need the entire chord.4.20Practice 3rd and 7th resolutionPlay only:4.21The smallest-movement ruleWhen you see a new chord, don't automatically jump to root position.4.22Exercise: C–Am–Dm–G7–CLet's build a smooth version.4.23Voice leading can create melody inside the chordsSuppose the top note of each chord is:4.24Top-note controlTake C major.4.25Harmonizing a melody note using inversionSuppose melody note is C.4.26A simple accompaniment setupTry this:4.27Contrary motionVoice leading becomes especially attractive when bass and melody move in opposite directions.4.28Avoiding parallel thinkingFor now, don't worry about traditional counterpoint rules like forbidden parallel fifths.4.29Exercise: turn block chords into a flowing accompanimentTake:4.30Try a 4-note patternLeft hand root on beat 1.4.31PedalInversions and voice leading become much more effective with careful sustain pedal.4.32Exercise: hear inversion, don't identify it yetPlay:4.33A practical progression to masterUse:4.34Your first arrangement challengeTake Happy Birthday or another melody you know extremely well.•Homework for Module 4Spend about 25–30 minutes.•Module 4 mini-testTry first without looking below.