// what is a scale?
A scale is a set of notes arranged in order from low to high. Scales are the raw material of melody. When you choose a scale, you're choosing which notes sound good together — and which ones to avoid.
The most important scale to know is the major scale. It has 7 notes and a specific pattern of steps between them. It's the "do re mi" scale — bright, happy, resolved.
The major scale pattern: Whole · Whole · Half · Whole · Whole · Whole · Half
A "whole step" skips one key. A "half step" moves to the very next key.
// the C major scale
The easiest major scale to learn is C major — it uses only white keys on a piano. C D E F G A B C. Play those notes in order and you'll hear the familiar "do re mi fa sol la ti do."
Every major scale follows the same pattern — just starting from a different note. G major, D major, F major — same pattern, different starting point.
C → D → E → F → G → A → B → C
W W H W W W H
(W = whole step, H = half step)
// melody from scale
A melody is just notes from a scale played in a chosen order and rhythm. You don't play every note — you pick some, skip others, repeat some, and give each one a length.
Most melodies stay within one scale. That's why they sound coherent. When a note outside the scale appears, it creates tension — which can be used intentionally for effect.
Ear training tip: Sing the C major scale out loud — do re mi fa sol la ti do. Then try to sing it backwards. Then jump around — do, mi, sol, do. Your ear is learning to recognise intervals. This is the foundation of playing by ear.
On your piano app, play C D E G — just those four notes, in any order, any rhythm. Everything you play will sound musical. Those four notes are the core of the C major pentatonic scale — used in thousands of songs. Improvise freely.