Triads Under the Hand
Three notes, one shape: thumb, middle finger, pinky on every other key. Learn the shape once and move it — C, F, G, A minor, D minor all live in the same hand.
Builds on: 3.1 The C Major Scale
A chord is a shape
Take the C major scale and play every other note from C: C, E, G. That is a triad — a three-note chord built from stacked thirds — and on the keyboard it has a reassuringly simple shape: a key, skip one, a key, skip one, a key. The right hand plays it with 1 3 5, the left with 5 3 1. Because the shape is always “every other white key”, you can slide the whole hand along the scale and get a new chord on each degree without changing the fingering at all.
Major and minor without moving a finger
Why are C, F and G called major, and A and D minor? Look at the distance between the bottom two notes. In C E G the gap from C to E is four half steps (a major third); in A C E the gap from A to C is three (a minor third). Same hand shape, but the white keys are not evenly spaced — E–F and B–C are half steps — so sliding the shape along changes the sound from bright to dark. Play C and then A minor and listen: the fingers did the same thing, the mood did not.
Playing three notes as one
The exercise below requires the three notes to sound together: press one at a time and it waits. That is deliberate. A chord that arrives as three little notes in a row is the most common beginner sound there is, and the cure is physical. Set the fingers on the keys first, feel all three surfaces, then drop the hand from the wrist in one motion, as if pressing a stamp. The fingers stay firm but not stiff; the arm supplies the weight. Then release all three at once — a clean chord has a clean ending too.
Balance: the top note sings
Once the notes arrive together, listen to their loudness. In a well-played chord the top note is slightly louder, because it is the one the ear follows as melody. The pinky is the weakest finger, so this takes intent: lean the hand a little toward the outside, and think of the thumb as accompaniment. In the left hand the reverse is often true — the bottom note (the root, under the pinky) is the anchor and gets the weight.
A capital letter alone means a major triad on that root: C, F, G. A small m after it means minor: Am, Dm. Every lead sheet, songbook and chord chart uses this shorthand, and the exercise shows it above each chord.
A stiff wrist makes the chord loud and harsh and the arm tired within minutes. If the sound is banging, stop, let the hand hang loose off the edge of the keyboard, then place it again with the wrist floating level.
Nine chords in the right hand, moving the shape from root to root; then six in the left. Feel the surfaces, drop, listen for the top.
🎹 Exercise — Chord Shapes, Right Hand
Root-position triads with 1 3 5. Each chord shows its symbol and its finger numbers; all three keys must go down together.
- Place the fingers on the keys before you play, then drop the hand in one motion.
- Listen for C to A minor: the same shape, a darker sound.
- Make the pinky note the loudest of the three.
Press the highlighted key to begin — any input works.
🎹 Exercise — Chord Shapes, Left Hand
The same shapes in the left hand, 5 3 1, with the root under the pinky.
- Here the bottom note carries the weight — lean toward the pinky.
- Release all three notes together between chords.
Press the highlighted key to begin — any input works.