Scale Degrees Explained: Tonic, Dominant, and the Rest

Every note of a scale has three things attached to it: a number, a name, and a job. The number is its position in the scale, counted from the bottom. The name describes what it does in the key. The job is how it behaves — whether it feels settled or whether it leans somewhere. Music theory uses all three constantly, and once you know them they will never leave you: they work in every key, every mode, and almost every style of music you will encounter.

This article teaches all seven degrees of the major scale, explains where the names come from, identifies which degrees are stable and which are restless, shows how the degrees produce the chords of a key, and extends the picture into minor. The Name the Scale Degrees exercise will give you immediate practice after reading.

A number for every note

Start on any note and count up the major scale: 1, 2, 3, 4, 5, 6, 7 — and then 1 again at the top (the octave). Those numbers are scale degrees, and they are often written with a small caret symbol above them: 1̂, 2̂, 3̂, 4̂, 5̂, 6̂, 7̂. The caret simply means "scale degree," distinguishing the number from an interval or a chord numeral.

In C major the degrees map to letters like this: 1̂ = C, 2̂ = D, 3̂ = E, 4̂ = F, 5̂ = G, 6̂ = A, 7̂ = B. The eighth note is C again — back to 1̂, one octave higher. In G major, 1̂ = G, 2̂ = A, 3̂ = B, 4̂ = C, 5̂ = D, 6̂ = E, 7̂ = F♯. The letters change, but the degree numbers and their names stay exactly the same. That is the whole point: the number describes a role, not a pitch.

The notation score below shows C major with all seven degrees labeled beneath the staff, together with their names and solfège syllables.

C major: degrees 1̂–7̂ with their names and solfège syllables. The scale ends on 1̂ again, one octave higher. Notice that the names encode each degree's relationship to the tonic — not its absolute pitch.

Before going further, here is the full table: degree number, name, function, and solfège in one place.

The seven scale degrees of any major scale. The colored circles use the standard Tissimo harmonic-function colors throughout this article.

The names and what they mean

The names of the scale degrees are not arbitrary. Each one is a compressed description of where the degree sits or what it does. Understanding the logic makes them easy to remember.

1̂ Tonic. From the Latin tonus (tone, key). The tonic is the home pitch — the note that gives the key its name and to which everything else is compared. In C major, C is the tonic. Play any phrase and stop on C: it sounds finished. Stop anywhere else: it sounds like it wants to continue. That pull toward the tonic is the fundamental fact of tonal music.

2̂ Supertonic. "Super" means above. The supertonic sits directly above the tonic, one step up. D in C major. It is mildly unstable and usually moves either down to 1̂ or up toward 3̂.

3̂ Mediant. From mediate (in the middle). The mediant sits midway between the tonic (1̂) and the dominant (5̂). In C major that is E — the third note, equidistant in thirds from C (below) and G (above). The mediant also defines the quality of the key: a major third above the tonic gives a major key; a minor third gives a minor key.

4̂ Subdominant. "Sub" means below. The subdominant is a perfect fifth below the tonic — not simply "below the dominant." In C major, a perfect fifth below C is F. Its mirror position to the dominant (which sits a fifth above) makes the two degrees the great left and right pillars of the key. The subdominant sounds like a step away from home — a gentle departure, less urgent than the dominant.

5̂ Dominant. From dominare (to rule). The dominant rules from a perfect fifth above the tonic. In C major that is G. It is the most powerful non-tonic degree: it creates tension that almost always resolves back to 1̂. The word "dominant" gives its name to the dominant seventh chord (V7), the dominant function in harmony, and the word "dominate" in ordinary speech.

6̂ Submediant. The "sub" (below) mediant. If the mediant sits midway going up from tonic to dominant, the submediant sits midway going down from tonic to subdominant. In C major that is A — midway between C (above) and F (below, going down). The submediant also carries a special relationship to the tonic: A minor is the relative minor of C major, sharing the same key signature.

7̂ Leading tone. This name describes behavior, not position. The leading tone leads into the tonic — it sits a half step below 1̂ (B in C major) and leans upward with strong urgency. The half-step tension from B to C is one of the defining sounds of tonal music. If you play the scale and stop on 7̂, the unfinished feeling is unmistakable.

The diagram below places 1̂, 4̂, and 5̂ on a number line showing their fifth-based symmetry.

The three tonal pillars in C major. Subdominant (4̂, F) is a fifth below the tonic; dominant (5̂, G) is a fifth above. That symmetry explains the names — and why the two non-tonic pillars share the prefix pattern "sub-" and "dom-" with each other.

The Scale Degree Names handout summarizes all seven degrees with their etymology and typical behavior. Keep it beside you when working through the exercises.

Stable and active tones

Not all scale degrees feel the same. Music theory divides them into stable tones (which feel restful) and active tones (which feel restless and lean toward resolution).

Stable tones: 1̂, 3̂, 5̂. These three degrees form the tonic triad — in C major, C–E–G. Land on any one of them and the ear relaxes. Degree 1̂ is the most stable of all; 3̂ and 5̂ are stable because they belong to the home chord.

Active tones: 7̂ and 4̂. These are the tendency tones — the degrees the ear most urgently needs to resolve. Degree 7̂ (B in C major) is a half step below the tonic and leans upward: 7̂→1̂. Degree 4̂ (F) is a half step above degree 3̂ (E) and leans downward: 4̂→3̂.

The notation below shows both resolutions.

The two tendency tones and their resolutions. Left: 7̂→1̂ (B→C in C major), a half-step rise. Right: 4̂→3̂ (F→E), a half-step fall. Both resolutions move inward — toward the stable core of the scale.

The other degrees (2̂ and 6̂) are mildly active. They are not part of the tonic triad, so they feel slightly unsettled, but they lack the acute half-step pull of 7̂ and 4̂. They typically resolve by step in whichever direction the melodic phrase is heading.

Stable tones (1̂ 3̂ 5̂) make up the tonic triad and feel complete. Active tones (7̂ and 4̂) are restless — both sit a half step from a stable tone and lean toward it. The other degrees (2̂, 6̂) are mildly active.

Why the dominant pulls so hard: V→I

The dominant degree (5̂) pulls toward the tonic for two reasons operating at once. First, 5̂ itself is active — it sits a fifth above home and creates harmonic tension. Second, the dominant seventh chord (V7) built on 5̂ contains both tendency tones at the same time: B (7̂) leans up to C, and F (4̂) leans down to E. These two half-step motions resolve into the tonic triad simultaneously.

The notation below shows this V7→I motion in C major.

V7 (G7) → I (C major) in C major. G7 contains the leading tone B (7̂) and the subdominant F (4̂) — both tendency tones. B rises to C (7̂→1̂), F falls to E (4̂→3̂), G holds or moves to C. This is the strongest cadential motion in tonal harmony.

This motion — dominant to tonic, V→I — is called the perfect cadence (or authentic cadence). It is the full stop of tonal music: the most common way a phrase or piece ends. Practice it at the Cadences handout to hear the pull in every key.

The infographic below maps the anatomy of G7 and shows exactly where the two half-step pulls happen.

Inside G7: both tendency tones at once. B (7̂) rises a half step to C, F (4̂) falls a half step to E. The two half-step pulls resolve simultaneously into the tonic triad — that is why V7→I is the most powerful cadence.

Degrees build the chords of the key

Scale degrees do more than describe single notes — they also name the chords built on each step of the scale. Stack two more notes in thirds above any scale degree, using only notes of the key, and you get the chord of that degree. The chord inherits its Roman numeral from the degree: I, ii, iii, IV, V, vi, vii°.

Capital numerals indicate major chords: I, IV, V. Lower-case numerals indicate minor chords: ii, iii, vi. Lower-case with a circle indicates diminished: vii°. This pattern is the same in every major key.

The seven chords of C major, one per degree. I, IV, and V are major; ii, iii, and vi are minor; vii° is diminished. The Roman numeral case tells you the quality instantly.

The pattern I–ii–iii–IV–V–vi–vii° is fixed: it falls out of the major scale's interval structure and cannot be changed without leaving the key. In G major, for example, I is G major, ii is A minor, iii is B minor, IV is C major, V is D major, vi is E minor, and vii° is F♯ diminished. Same pattern, different letters.

The full chart of chords in multiple keys — including which chords share notes with each other and how they substitute for one another — is in The chords of a key.

The infographic below shows all seven chords with their degree, Roman numeral, chord name, quality, and role in one place.

Every scale degree produces a chord. I, IV, V are major; ii, iii, vi are minor; vii° is diminished. This pattern holds in every major key — only the chord names change.

Here is a summary of all seven degrees, their names, and their functions in one infographic:

All seven scale degrees at a glance in C major. The color coding follows the Tissimo harmonic-function system used throughout all exercises and handouts.

Here is the etymology of all seven names for reference:

Why each degree is named as it is. Every name encodes the degree's position or behavior relative to the tonic — there is nothing arbitrary here.

Degrees in minor: the 7th changes

Everything above has used major keys. The same degree numbering applies in minor — 1̂ through 7̂, same names for degrees 1–6 — but the 7th degree behaves differently.

In a natural minor scale, the 7th degree is a whole step below the tonic (G in A minor). A whole step creates very little pull — the ear barely notices the unresolved tension. This version of the 7th degree is called the subtonic (not the leading tone). It feels soft and inconclusive.

Music in minor that wants a strong cadential pull raises the 7th by a half step. In A minor that means raising G to G♯, now only a half step below the tonic A. This raised 7th is called the leading tone — the same name and same behavior as in major. The scale that includes this raised 7th is called harmonic minor.

The notation below shows A minor both ways.

A natural minor (top): degree 7 is G♮, a whole step below A — the subtonic, weak pull. A harmonic minor (bottom): degree 7 is G♯, a half step below A — the leading tone, strong pull. The raised 7th (G♯) appears as an accidental, not in the key signature.

The chords of a minor key follow from which form of the 7th is used. The minor v chord (soft cadence) or the major V chord (strong cadence, requiring the raised 7th) are both options, and most minor-key music uses both depending on context. The Chords of a key handout covers this in full.

The table below shows all seven degrees side by side in C major and A minor, making the relationship between relative keys visible at a glance.

C major vs A minor side by side. The degree numbers and names are identical; only the letters differ. In minor, the 7th degree has two versions: the subtonic (G♮) and the leading tone (G♯).

Solfège: the syllable shorthand

Solfège gives each degree a one-syllable name that is faster to sing than a number and easier than a letter (letters vary by key; solfège stays fixed to the degree):

• 1̂ = do (the tonic, home)
• 2̂ = re
• 3̂ = mi
• 4̂ = fa
• 5̂ = sol
• 6̂ = la
• 7̂ = ti (the leading tone — sometimes written si in older European traditions)

These are the moveable-do solfège syllables: "do" always means the tonic of whatever key you are in, regardless of the actual pitch. When you hear the ending of a phrase land on "do," you know it has come home. When a melody climbs to "ti," you feel the unresolved pull before the return to "do."

Singing scales with solfège — "do re mi fa sol la ti do" — is one of the fastest ways to internalize scale degree identity, because the syllable coloring gives each degree a distinctive sound. The Major scale handout connects the whole-step and half-step recipe to the degree numbers that frame it.

Solfège reference in C major. Moveable-do: "do" is always the tonic, whatever key you are in. Sing up to "ti" and stop — the pull back to "do" is the leading tone in action.

Putting it all together

Scale degree knowledge makes you a better reader, listener, and composer in one move. When you see a note in a melody, ask: what degree is this? Is it stable (1, 3, 5) or active (7, 4)? When you hear a chord, its Roman numeral tells you which degree it is built on and what tension level to expect. When you write a progression, you are navigating the degrees — leaving home (I), creating tension (IV or V), and returning (I).

The Name the Scale Degrees exercise tests both reading (name the degree of a written note) and writing (notate the named degree). Work through it in several keys — G, F, D, and B♭ are good targets — until you can answer without counting from the bottom every time.

For chord-level work, The chords of a key shows how to build all seven chords and understand their functions; the Cadences handout puts V→I and its variants in four-bar context so you can hear the degrees working in real harmonic motion.