Which scales to learn first on the piano?

A scale is a selection of notes that sound good together. An octave holds twelve different notes; a scale usually keeps seven of them, and that choice gives a melody its colour. Most of the pieces you like draw their notes from a scale, often without you noticing.

So learning a scale is not about reciting notes: it is about building a reservoir. Here are five notes, then a short phrase made with only three of them.

C major is the simplest way in: its seven notes are all white keys. There is nothing to look for, so you can focus on what matters: even fingers and the sound of the scale.

Listen closely to two places: E–F and B–C. These white keys touch with no black key between them. They are semitones, the smallest steps on the keyboard, and where they fall gives the scale its character.

A minor uses exactly the same white keys as C major. What changes is the tonic: the note the music rests on and comes back to. Starting from A, the semitones no longer fall in the same places in the scale.

The most audible difference is the third. From A to C there is a tone and a half; from C to E, two tones. That smaller third makes the scale darker, more inward to many ears. Not necessarily sad: whether a piece feels melancholic, mysterious or calm depends on much more than its scale.

G major looks a lot like C major: six of its seven notes are the same. Only one changes: F goes up a semitone and becomes F sharp, the black key just to its right.

Why? To keep the same pattern of tones and semitones as C major. Starting from G, a semitone is needed right before the top tonic: F♯–G gives it.

Once these three scales feel easy, two paths open up. F major takes the opposite road to G major: one black key, but going down. The pentatonic scale removes notes, which makes it a friendly place to start improvising.

A scale makes sense once you play with it. Start the loop: it holds four chords in the left hand, shown in grey. Your right hand makes up a melody with the orange notes, those of the C major pentatonic.

They all belong to the key of the loop, so none of them sounds foreign to it. Some settle better than others on each chord, though, and a few rub against it: listen, play slowly, leave silences, and end on C when the loop comes back round.