How to form diatonic chords of C sharp major scale?
C Sharp Major Scale
C♯ – D♯ – E♯ – F♯ – G♯ – A♯ – B♯ – C♯ are the notes of the C sharp major scale.
Diatonic chords are formed by stacking two generic third notes above each scale note.
C Sharp Major Diatonic Chords
These are the seven major scale diatonic chords that come from the C sharp major scale.
Each major scale diatonic chord is labelled with a roman numeral number:
All major scales follow the same pattern:
I, ii, iii, IV, V, vi, viiº
We use uppercase roman numeral numbers to represent major chords, lowercase to represent minor chords, uppercase with a small plus sign to represent augmented chords, and lowercase with a small circle to represent diminished chords.
First, fourth and fifth chords in major will always be major. Second, third and sixth chords in major will always be minor. Seventh chord in major scale will always be diminished.
The seven diatonic chords in the C sharp major key are:
I. C♯ – E♯ – G♯ (C Sharp major chord)
ii. D♯ – F♯ – A♯ (D Sharp minor chord)
iii. E♯ – G♯ – B♯ (E Sharp minor chord) *Notice that E Sharp and F are enharmonic equivalents. F minor chord is the same as E Sharp minor chord.
IV. F♯ – A♯ – C♯ (F Sharp major chord)
V. G♯ – B♯ – D♯ (G Sharp major chord) *Notice that G Sharp and A Flat are enharmonic equivalents, and A Flat major chord is the same as G Sharp major chord.
vi. A♯ – C♯ – E♯ (A Sharp minor chord)
viiº. B♯ – D♯ – F♯ (B Sharp diminished chord) *Notice that B Sharp and C are enharmonic equivalents. C diminished chord is the same as B Sharp diminished chord.
These are the harmonic chords that are diatonic to the C sharp major scale.
Other Major Scale Diatonic Chords
Diatonic Chords of C Major Scale
Diatonic Chords of C Sharp Major Scale / D Flat Major Scale
Diatonic Chords of D Major Scale
Diatonic Chords of E Flat Major Scale
Diatonic Chords of E Major Scale
Diatonic Chords of F Major Scale
Diatonic Chords of F Sharp Major Scale / G Flat Major Scale
Diatonic Chords of G Major Scale
Diatonic Chords of A Flat Major Scale
Diatonic Chords of A Major Scale
Diatonic Chords of B Flat Major Scale
Diatonic Chords of B Major Scale / C Flat Major Scale
Piano Music Theory 