The diatonic family is the one most of us meet first: seven notes, seven ways to read them. If you know the white keys of a piano, you already know all seven scales — what changes is only which note you treat as home.
This article walks through them one at a time, with the step pattern of each. The idea behind the family is described in A scale family: one set of notes, read from different centres.
The step pattern is what makes a scale sound the way it does
Between neighbouring notes there is either a whole step (W) or a half step (H). Write those out in order and you have the scale’s fingerprint. All seven diatonic scales use five whole steps and two half steps — they differ only in where the half steps fall.
| scale | steps | half steps land after degree |
|---|---|---|
| Ionian (Major) | W W H W W W H | 3 and 7 |
| Dorian | W H W W W H W | 2 and 6 |
| Phrygian | H W W W H W W | 1 and 5 |
| Lydian | W W W H W W H | 4 and 7 |
| Mixolydian | W W H W W H W | 3 and 6 |
| Aeolian (Natural Minor) | W H W W H W W | 2 and 5 |
| Locrian | H W W H W W W | 1 and 4 |
Read the column of step patterns from top to bottom and you can see the rotation at work: each row is the previous one shifted by a single step. That is the family in one picture.
The seven, one by one
Ionian — the major scale. Half steps sit high up, after the third and the seventh degree; the seventh leans strongly towards the tonic, which is what gives major its sense of arrival.
Dorian — minor in colour, but with a raised sixth degree. That single note is why Dorian sounds brighter and more open than natural minor; it is at home in folk tunes and in modal jazz.
Phrygian — the half step comes immediately, between the first and second degrees. That opening step is the whole character: dark, Spanish in flavour, recognisable from the first two notes.
Lydian — major with a raised fourth. Nothing pulls downwards, and the scale feels lifted and wide; film music reaches for it often.
Mixolydian — major with a lowered seventh. The strong pull to the tonic disappears, so the scale sits comfortably without resolving — the natural home of the dominant-seventh sound, of blues and of rock.
Aeolian — natural minor. Half steps after the second and fifth degrees; the seventh is a whole step below the tonic, so the ending is softer than in major.
Locrian — the half step opens the scale and the fifth is diminished. The tonic triad is not stable, which makes Locrian rare as a home key and useful as a colour over a half-diminished chord.
Same notes, different home — and two ways to move between them
Two different questions come up all the time, and the circle answers them with two different buttons:
- «Keep these notes, move the home» — that is walking around the family. Long press on a note makes it the tonic, and the scale name changes while the star stays put.
- «Keep this home, change the colour» — that is the
›‹buttons: the tonic stays where it is and the steps shift, so from C Ionian you arrive at C Dorian, C Phrygian and the rest.
Both are described in detail in Scale Circle: what it is and how it is built, in the articles about the buttons and about long press.
A short way to hear the difference
Pick one tonic — C is convenient — and press › seven times, listening after each press. The home note never moves, so everything you hear is the effect of the step pattern alone: major brightens into Lydian, darkens through Mixolydian into minor, and returns.
It takes about a minute, and it is the quickest way to stop reading mode names as labels and start hearing them as colours.
Read next
- Five, six, seven, eight notes: what each size gives you — what changes when a family has five, six or eight notes.
- Symmetrical scales: why Whole Tone has only one mode — the families where rotation gives you nothing new.
- Finding the scale you need in the Circle — finding a particular scale in the Circle without hunting.
Still have a question? Ask it in Questions.