- Scale of C Major Chord : Chord Scales - How to find Scales of Chords , and
- Chord Scales : Scales of Guitar Chords
The following discussion is about the chords that can be formed from a scale always keeping the tonic as the root note, and hence, not to be confused with chord progression-
The major scale is built as 2-2-1-2-2-2-1. The notes of a major scale correspond to the intervals (U,) M2, M3, P4, P5, M6, M7 and P8, i.e. 1-2-3-4-5-6-7-8. Thus the chords that are derived from these notes are:
- 1-2-5: Suspended 2nd (X sus 2)
- 1-2-3-4: Add second (X add 2)
- 1-3-5: Major (X)
- 1-3-5-5: Add 5t (X5)
- 1-4-5: Suspended 4th (X sus 4)
- 1-3-4-5: Major 4th (X4)/ X add 4
- 1-5: Power chords
- 1-3-5-6: Add 6th (X6)
- 1-3-5-7: Major - major 7th (XM7)
- 1-3-5-9: Dominant 9th / Add 9th (X9) (add 2 beyond P8)
- 1-3-5-6-9: Major 6th / 9th (X 6/9)
- 1-3-5-11: Add 11th (X11) (add 4 beyond P8)
- 1-3-5-13: Add 13th (X13) (add 6 beyond P8)
The Dominant 7th Chord:
Mixolydian Mode / Vth degree of a Major Scale.
- 1-3-5-7b: Major Minor 7th / Dominant 7th / a.k.a “the 7th chord” (X7)
The dominant 7th chord goes well only in some songs of major chords.
Thus the chords that are playable in a song in C major are:
C major, C sus2, C add2, C sus4, C(add)5, C6, (C7), CM7, C add9, C add 9/6, C11, C13, etc. Many other cords are possible and the commonest chords based on the major scale have been listed.
Similar theory applies to minor, dominant, augmented, etc scales.
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