# Major scale
The major scale is a seven-note diatonic scale of Western music built from a fixed pattern of whole steps and half steps: whole, whole, half, whole, whole, whole, half, usually abbreviated W-W-H-W-W-W-H.[1](https://piano.org/theory/major-scales/) Starting on any pitch and applying that pattern produces a major scale; the scale is named for its first note, which is also its last.[2](https://pressbooks.nebraska.edu/openmusictheory/chapter/major-scales/) It is the most commonly used scale in Western music and the reference point from which key signatures, chord construction, and harmonic function are derived.[3](https://openbooks.macewan.ca/introtomusictheory/chapter/key-signatures/) • [4](https://organology.net/music-theory/the-major-scale-in-western-music/)
| Key fact | Detail |
|---|---|
| Step pattern | Whole, whole, half, whole, whole, whole, half (W-W-H-W-W-W-H); the half steps fall between scale degrees 3–4 and 7–8[1](https://piano.org/theory/major-scales/) • [5](https://www.uwosh.edu/faculty_staff/atwell/music_theory/MajorSca.htm) |
| Semitone sizes | 2+2+1+2+2+2+1 = 12 semitones, the number of semitones in an octave[6](https://www.howmusicworks.org/202/The-Major-Scale/Intervals-of-the-Major-Scale) |
| C major | C, D, E, F, G, A, B; the only major scale using only the white keys of the piano[1](https://piano.org/theory/major-scales/) • [6](https://www.howmusicworks.org/202/The-Major-Scale/Intervals-of-the-Major-Scale) |
| Structure | Two major tetrachords (whole–whole–half) joined by a whole step[7](https://odp.library.tamu.edu/stepstomusictheory/chapter/major-scales-keys/) |
| Scale degrees | Tonic, supertonic, mediant, subdominant, dominant, submediant, leading tone[2](https://pressbooks.nebraska.edu/openmusictheory/chapter/major-scales/) |
| Other name | Ionian mode; a basis of Western harmony[8](https://book.fretboardfoundation.com/major-scale.html) |
| Emotional association | In Western music the major mode typically conveys excited, happy, bright, or martial emotions, against the minor mode's subdued, sad, or dark ones[9](https://journals.plos.org/plosone/article?id=10.1371%2Fjournal.pone.0031942) |
## The interval pattern
What makes a scale "major" is not its specific notes but the pattern of distances between them.[1](https://piano.org/theory/major-scales/) A whole step equals two half steps, and the half step is the smallest distance between two pitches.[10](https://fiveable.me/ap-music-theory/key-terms/major-scale) Adding the semitone sizes of the pattern, 2+2+1+2+2+2+1, gives 12, the number of semitones in an octave.[6](https://www.howmusicworks.org/202/The-Major-Scale/Intervals-of-the-Major-Scale)
**C major as the model.** Starting on C, the pattern lands exactly on the white keys of the piano: C, D, E, F, G, A, B, C. The two semitone steps fall between E and F and between B and C, precisely where there is no black key.[1](https://piano.org/theory/major-scales/) • [3](https://openbooks.macewan.ca/introtomusictheory/chapter/key-signatures/) This is a special property of [C major](https://www.edgepedia.org/c-major) alone; major scales starting on other notes need at least one black key, and in most cases several.[6](https://www.howmusicworks.org/202/The-Major-Scale/Intervals-of-the-Major-Scale) C major is taught first not because it is simpler but because it happens to need no accidentals.[11](https://tomus.app/learn/scales/major-scale)
**Building scales on other notes.** Applying the same pattern from a new starting note requires accidentals to preserve it. In [G major](https://www.edgepedia.org/g-major), the pattern demands F♯ rather than F, and those accidentals become the key signature.[11](https://tomus.app/learn/scales/major-scale) • [10](https://fiveable.me/ap-music-theory/key-terms/major-scale) When writing a major scale, every letter name is used once in order, no notes are skipped and none repeated; a [D major](https://www.edgepedia.org/d-major) scale runs D–E–F♯–G, not D–E–G♭–G, which would skip F♯ and repeat G.[12](https://musictheory.pugetsound.edu/mt21c/TheMajorScale.html) Major scales are written with sharps or flats, never both, and each major scale has a unique key signature.[7](https://odp.library.tamu.edu/stepstomusictheory/chapter/major-scales-keys/)
## Tetrachords and scale degrees
The pattern can be heard as two halves. A major tetrachord is a four-note segment with the steps whole–whole–half; a major scale consists of two major tetrachords connected by a whole step, giving whole–whole–half :: whole :: whole–whole–half. In C major the lower tetrachord is C–D–E–F and the upper is G–A–B–C.[7](https://odp.library.tamu.edu/stepstomusictheory/chapter/major-scales-keys/) • [12](https://musictheory.pugetsound.edu/mt21c/TheMajorScale.html)
Each note of the scale has a numbered position, its scale degree, written as a numeral with a caret. The degrees carry traditional names: 1 the tonic, 2 the supertonic, 3 the mediant, 4 the subdominant, 5 the dominant, 6 the submediant, and 7 the leading tone. The solfège syllables do, re, mi, fa, sol, la, and ti name the same positions.[2](https://pressbooks.nebraska.edu/openmusictheory/chapter/major-scales/) The numbers describe positions, not fixed pitches: in C major C is 1 and G is 5, but in a scale starting on G, G is 1.[13](https://www.thecommontone.com/textbook/1-4-scaling-the-heights/)
## Relation to keys, chords, and modes
The major scale is the launching point for much of tonal harmony: keys, chords, progressions, modes, and the circle of fifths all follow from it.[1](https://piano.org/theory/major-scales/) Key signatures, chord construction, and harmonic function are derived directly from it, and it serves as the benchmark against which minor scales, modes, and chromatic harmony are explained.[4](https://organology.net/music-theory/the-major-scale-in-western-music/) In a major key, the fifth scale degree forms a major triad functioning as the dominant.[14](https://open.lib.umn.edu/musiccomposition/chapter/common-practice-era-chord-qualities/)
The seven modes of the major scale reuse its notes starting from different degrees; the major scale itself is the Ionian mode.[8](https://book.fretboardfoundation.com/major-scale.html) One of these modes, Mixolydian, is a major-type scale in which the leading tone is replaced by a flat seven, a color heard in blues and early rock.[15](https://time.com/6091944/lorde-solar-power/)
## Historical development
The particular scale system of Western music is the result of a long historical evolution, with crucial developments in the ninth and eleventh centuries.[16](https://www.cambridge.org/core/books/abs/cambridge-history-of-western-music-theory/notes-scales-and-modes-in-the-earlier-middle-ages/DDD13C280626BC9A90451D1F453087A0) For centuries, pitch organization ran through the church modes rather than through major and minor as abstract scales. According to the music theorist Michael R. Dodds of the [University of North Carolina](https://www.edgepedia.org/university-of-north-carolina) at Greensboro, not until about 1680 did theorists begin to conceive the major and minor modes prescriptively, as abstract scales transposable to any chromatic degree; Heinichen's 1711 circle of fifths and Campion's 1716 rule of the octave completed the organization of the major and minor keys into a system of transpositionally equivalent keys.[17](https://academic.oup.com/book/55156/chapter-abstract/424075281) A statistical study of European pitch distributions from 1400 to 1750 found results consistent with the view that the modern major and minor modes changed over time and were preceded by a system with more than two modes.[18](https://online.ucpress.edu/mp/article-abstract/31/3/223/62624/A-Statistical-Approach-to-Tracing-the-Historical?redirectedFrom=fulltext)
The major and minor heptatonic (diatonic) scales, along with their pentatonic counterparts, have been among the most widely employed scales in Western music over the last few centuries.[19](https://journals.plos.org/plosone/article?id=10.1371%2Fjournal.pone.0008144) Their dominance was not uninterrupted: the Impressionist period displaced major and minor as the primary organizing principle of Western music in favor of whole-tone collections, pentatonic fields, and revived medieval modes.[20](https://museca.org/library-scales-of-western-music/)
## Sound and emotion
The major scale produces the familiar do-re-mi sound, and its interval pattern is what creates that characteristic quality.[6](https://www.howmusicworks.org/202/The-Major-Scale/Intervals-of-the-Major-Scale) In Western music the major mode is typically used to convey excited, happy, bright, or martial emotions, while the minor mode conveys subdued, sad, or dark ones.[9](https://journals.plos.org/plosone/article?id=10.1371%2Fjournal.pone.0031942) [Perception](https://www.edgepedia.org/perception) experiments find that major modes are judged happier and brighter than minor modes, and that ascending scales are judged more positively than descending ones.[21](https://doi.org/10.3758/s13414-020-02198-6) The association is not absolute: studies of musical improvisation note that simple correlations between mode and emotion do not adequately explain the range and subtlety of musically induced emotions.[22](https://journals.plos.org/plosone/article?id=10.1371%2Fjournal.pone.0105144)
## References
1. [Major Scales on Piano: The Complete Guide, piano.org](https://piano.org/theory/major-scales/)
2. [Major Scales, Scale Degrees, and Key Signatures, Open Music Theory (Hamm & Hughes)](https://pressbooks.nebraska.edu/openmusictheory/chapter/major-scales/)
3. [Major Scale, Introduction to Music Theory and Rudiments, MacEwan Open Books](https://openbooks.macewan.ca/introtomusictheory/chapter/key-signatures/)
4. [The Major Scale in Western Music, Organology](https://organology.net/music-theory/the-major-scale-in-western-music/)
5. [Major Scales, University of Wisconsin Oshkosh](https://www.uwosh.edu/faculty_staff/atwell/music_theory/MajorSca.htm)
6. [Intervals of the Major Scale, How Music Works](https://www.howmusicworks.org/202/The-Major-Scale/Intervals-of-the-Major-Scale)
7. [Major Scales and Keys, Steps to Music Theory, Texas A&M University Libraries](https://odp.library.tamu.edu/stepstomusictheory/chapter/major-scales-keys/)
8. [Major scale, Fretboard Foundation](https://book.fretboardfoundation.com/major-scale.html)
9. [Bowling DL, Sundararajan J, Han S, Purves D (2012). Expression of Emotion in Eastern and Western Music Mirrors Vocalization. PLoS ONE 7(3): e31942.](https://journals.plos.org/plosone/article?id=10.1371%2Fjournal.pone.0031942)
10. [Major Scale, AP Music Theory Definition & Exam Guide, Fiveable](https://fiveable.me/ap-music-theory/key-terms/major-scale)
11. [The Major Scale, Tomus](https://tomus.app/learn/scales/major-scale)
12. [The Major Scale, Music Theory for the 21st-Century Classroom, Puget Sound](https://musictheory.pugetsound.edu/mt21c/TheMajorScale.html)
13. [Scaling the Heights, The Common Tone](https://www.thecommontone.com/textbook/1-4-scaling-the-heights/)
14. [Common Practice Era Chord Qualities, Music Composition & Theory, University of Minnesota](https://open.lib.umn.edu/musiccomposition/chapter/common-practice-era-chord-qualities/)
15. [Why Lorde's Solar Power Is a Pop Oddity, TIME](https://time.com/6091944/lorde-solar-power/)
16. [Notes, Scales, and Modes in the Earlier Middle Ages, The Cambridge History of Western Music Theory](https://www.cambridge.org/core/books/abs/cambridge-history-of-western-music-theory/notes-scales-and-modes-in-the-earlier-middle-ages/DDD13C280626BC9A90451D1F453087A0)
17. [Michael R. Dodds (2024). From Modes to Keys in Early Modern Music Theory, Oxford University Press](https://academic.oup.com/book/55156/chapter-abstract/424075281)
18. [Albrecht J (2013). A Statistical Approach to Tracing the Historical Development of Major and Minor Pitch Distributions, 1400–1750. Music Perception 31(3).](https://online.ucpress.edu/mp/article-abstract/31/3/223/62624/A-Statistical-Approach-to-Tracing-the-Historical?redirectedFrom=fulltext)
19. [A Biological Rationale for Musical Scales, PLOS ONE](https://journals.plos.org/plosone/article?id=10.1371%2Fjournal.pone.0008144)
20. [Scales of Western Music, Museca](https://museca.org/library-scales-of-western-music/)
21. [Pitch direction on the perception of major and minor modes, Attention, Perception, & Psychophysics](https://doi.org/10.3758/s13414-020-02198-6)
22. [McPherson MJ et al. (2014). The Role of Emotion in Musical Improvisation. PLoS ONE 9(8): e105144.](https://journals.plos.org/plosone/article?id=10.1371%2Fjournal.pone.0105144)
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*Topic: Encyclopedia › Arts and culture › Music › Musical practice and theory › Instruments, theory, and world traditions › Pitch, tuning, scales, and musical acoustics*
*Initially written Sep 17, 2026 · Reviewed: Oct 25, 2026 · Edited: Oct 15, 2026; Oct 25, 2026 · Last review: Oct 25, 2026*
*Copyright 2026 EdgeChat AI, a subsidiary of Biostate AI.*
License: Edgepedia Community License 1.0, https://www.edgepedia.org/edgepedia/license