Major and minor scales explained step by step
Every major scale follows the same pattern of whole and half steps, and minor scales come in three versions. Learn to build them from any note.
A scale is a series of notes arranged from a main note, the tonic, up to its octave, following a fixed pattern of distances. The major scale follows the formula whole step, whole step, half step, whole step, whole step, whole step, half step (T-T-S-T-T-T-S); natural minor follows whole step, half step, whole step, whole step, half step, whole step, whole step (T-S-T-T-S-T-T).
With these two formulas, you can build a scale starting on any note. And once you understand why the minor scale has three forms—natural, harmonic and melodic—many pieces and chord progressions will start to make sense.
In short
- A half step, also called a semitone, is the smallest distance between two notes; a whole step equals two half steps.
- Major scale: T-T-S-T-T-T-S. C major has no sharps or flats.
- Natural minor scale: T-S-T-T-S-T-T. A minor shares the notes of C major: they are relative keys.
- Harmonic minor raises the 7th degree; melodic minor raises the 6th and 7th degrees when ascending.
- Each letter name appears only once in a scale: that is why F major uses B♭ rather than A♯.
Whole steps and half steps: the two distances you need
A half step is the smallest distance between two notes in Western music. On the piano, it is the move from one key to the next, black or white; on the guitar, from one fret to the next. It is also called a semitone, or “medio tono” in Spanish. A whole step equals two half steps.
- From C to C♯: a half step. From C to D: a whole step.
- There is only a half step between E and F, and between B and C: there is no black piano key between them.
- There is a whole step between the other adjacent natural notes (C-D, D-E, F-G, G-A, A-B).
To explore how distances between notes are measured, read what is a musical interval?.
The major scale and its formula
| Degree | Note | Distance to the next note |
|---|---|---|
| I | C | Whole tone |
| II | D | Whole tone |
| III | E | Semitone |
| IV | F | Whole tone |
| V | G | Whole tone |
| VI | A | Whole tone |
| VII | B | Semitone |
| VIII (I) | C | — |
C major is the only major scale played entirely on the white keys. If you start on another note, you will need to add sharps or flats to keep the same formula.
How to build any major scale
- Write the seven letter names in order from the tonic, without repeating or skipping any. For G: G, A, B, C, D, E, F, G.
- Check each distance against the formula T-T-S-T-T-T-S.
- Where the distance does not match, alter the note with ♯ or ♭ without changing its letter name. In G, E to F is a half step, but the formula calls for a whole step: F becomes F♯, leaving the final half step from F♯ to G.
- Check by playing it: if it sounds like "do-re-mi-fa-sol-la-ti-do", it's right.
| Scale: | Notes | Accidentals |
|---|---|---|
| C major | C D E F G A B C | None |
| G major | G A B C D E F♯ G | F♯ |
| D major | D E F♯ G A B C♯ D | F♯, C♯ |
| F major | F G A B♭ C D E F | B♭ |
Look at F major: A to B is a whole step, but the formula calls for a half step. You might think of A♯, but then you would have two “A” notes and no “B.” That is why it is written B♭: each letter name appears only once.
Scale degrees and their names
| Degree | Name | Why it matters |
|---|---|---|
| I | Tonic | The resting note; gives the scale its name |
| II | Supertonic | Just above the tonic |
| III | Mediant | Determines whether the scale is major or minor |
| IV | Subdominant | Root of one of the three main chords |
| V | Dominant | Creates tension that calls for a return to the tonic |
| VI | Submediant | Starting point of the relative minor |
| VII | Leading tone (a half step from the tonic) or subtonic (a whole step away) | The leading tone “pulls” toward the tonic |
The natural minor scale and relative keys
The natural minor formula is T-S-T-T-S-T-T. Starting on A, it needs no sharps or flats: A, B, C, D, E, F, G, A. These are exactly the notes of C major, starting on its 6th degree. That is why A minor is the relative minor of C major: they share notes and a key signature, but have different tonics and characters.
- To find a major scale's relative minor, go down three half steps from its tonic: from G major, you arrive at E minor (E F♯ G A B C D E).
- Do not confuse relative with parallel: C minor is the parallel minor of C major because they have the same tonic. C natural minor is C D E♭ F G A♭ B♭ C.
- Compared with its parallel major, natural minor has lowered degrees III, VI and VII.
Major is often described as happy and minor as sad. That is a useful listening guide, but not a rule: there is festive music in minor keys and melancholy music in major keys.
Natural, harmonic and melodic minor: the differences
| Scale: | Notes | Formula | What changes |
|---|---|---|---|
| Natural minor | A B C D E F G A | T-S-T-T-S-T-T | The basic form |
| Harmonic minor | A B C D E F G♯ A | T-S-T-T-S-1½T-S | Raises the 7th degree |
| Melodic minor (ascending) | A B C D E F♯ G♯ A | T-S-T-T-T-T-S | Raises the 6th and 7th degrees |
| Melodic minor (descending, classical usage) | A G F E D C B A | Same as natural minor | Returns to natural minor |
Why harmonic minor exists
In natural minor, the 7th degree (G) is a whole step from the tonic and does not “pull” toward it. Raising it to G♯ creates a leading tone, and the chord on the 5th degree changes from E minor to E major (E-G♯-B), which resolves much more strongly to A minor. This is the E major chord in the Lam–Rem–Mi (Am–Dm–E) progression used in boleros and many Latin American songs; you can play it with basic guitar chords. A side effect is the one-and-a-half-step leap between F and G♯, which gives the scale a very recognizable color.
Why melodic minor exists
To smooth out that leap when singing or playing melodies, melodic minor also raises the 6th degree when ascending. When descending, classical tradition returns to natural minor because the leading tone is no longer needed. In jazz, the same form is used both ascending and descending.
How to practice scales without getting bored
- Write out C, G, D and F major and their relative minors. Writing the scales helps the formula stick better than memorizing them.
- Play them on the piano. For C major, the usual ascending right-hand fingering is 1-2-3-1-2-3-4-5; the left-hand fingering is 5-4-3-2-1-3-2-1.
- Set the metronome to 60: first play one note per beat, then two. Aim for even volume and duration.
- Sing the scales using the note names. Singing trains your ear much more than playing alone.
- Play the three A minor scales one after another and listen for what changes in each.
- Follow the circle of fifths to add scales with one new sharp or flat at a time.
In music theory or piano lessons, your teacher connects each scale to real pieces, which helps you remember them.
Frequently asked questions
How many major scales are there?
There are 12 major scales with distinct sounds, one for each note in the octave. Since some can be written two ways, such as F♯ major and G♭ major, music theory uses 15 major key names.
What is a pentatonic scale?
It is a five-note scale. Major pentatonic removes the 4th and 7th degrees of the major scale (C D E G A); minor pentatonic removes the 2nd and 6th degrees of natural minor (A C D E G). It is widely used for improvisation in rock, blues and popular music.
What is the difference between a scale and a key?
A scale is an ordered list of notes. A key is the whole system organized around a tonic: its notes, chords and the function of each. Saying a song is “in A minor” refers to its key.
Why say semitone rather than half step?
They are synonyms. “Semitone” is more common in theory and books; “half step” is more common in conversation, especially among popular musicians.
Sources
We checked the facts in this article against these sources on October 22, 2026.