Harmonizing major scales into chord

Every scale has matching chords. In improvisation, for example, scales are played “over” chords. In this context chord are being the harmony and scales could be the melody, a solo, a phrase, a lick and so on.

Here we look on the Major Scale and which triads and four-note chords it can be harmonized into. In other words, which chords that can be built from the scale.

Triads

C Major Scale Triads
Degrees I ii iii IV V vi vii°
Notes C D E F G A B
Chords C Dm Em F G Am Bdim
Notes in chord C-E-G D-F-A E-G-B F-A-C G-B-D A-C-E B-D-F
D Major Scale Triads
Degrees I ii iii IV V vi vii°
Notes D E F# G A B C#
Chords D Em F#m G A Bm C#dim
Notes in chord D-F#-A E-G-B F#-A-C# G-B-D A-C#-E B-D-F# C#-E-F
E Major Scale Triads
Degrees I ii iii IV V vi vii°
Notes E F# G# A B C# D#
Chords E F#m G#m A B C#m D#dim
Notes in chord E-G#-B F#-A-C# G-B-D# A-C#-E B-D#-F# C#-E-G# D#-F#-A
F Major Scale Triads
Degrees I ii iii IV V vi vii°
Notes F G A Bb C D E
Chords F Gm Am Bb C Dm Edim
Notes in chord F-A-C G-Bb-D A-C-E Bb-D-F C-E-G D-F-A E-G-Bb
G Major Scale Triads
Degrees I ii iii IV V vi vii°
Notes G A B C D E F
Chords G Am Bm C D Em F#dim
Notes in chord G-B-D A-C-E B-D-F# C-E-G D-F#-A E-G-B F#-A-C
A Major Scale Triads
Degrees I ii iii IV V vi vii°
Notes A B C# D E F# G#
Chords A Bm C#m D E F#m G#dim
Notes in chord A-C#-E B-D-F# C-E-G# D-F#-A E-G#-B F#-A-C# G#-B-D
B Major Scale Triads
Degrees I ii iii IV V vi vii°
Notes B C# D# E F# G# A#
Chords B C#m D#m E F# G#m A#dim
Notes in chord B-D#-F# C#-E-G# D-F#-A# E-G#-B F#-A#-C# G#-B-D# A#-C#-E

Four-note chords

C Major Scale Four-note chords
Degrees Imaj7 iim7 iiim7 IVmaj7 V7 vim7 viiø
Notes C D E F G A B
Chords Cmaj7 Dm7 Em7 Fmaj7 G7 Am7
Notes in chord C-E-G-B D-F-A-C E-G-B-D F-A-C-E G-B-D-F A-C-E-G B-D-F-A
D Major Scale Four-note chords
Degrees Imaj7 iim7 iiim7 IVmaj7 V7 vim7 viiø
Notes D E F# G A B C#
Chords Dmaj7 Em7 F#m7 Gmaj7 A7 Bm7
Notes in chord D-F#-A-C# E-G-B-D F#-A-C#-E G-B-D-F# A-C#-E-G B-D-F#-A C#-E-F-B
E Major Scale Four-note chords
Degrees Imaj7 iim7 iiim7 IVmaj7 V7 vim7 viiø
Notes E F# G# A B C# D#
Chords Emaj7 F#m7 G#m7 Amaj7 B7 C#m7
Notes in chord E-G#-B-D# F#-A-C#-E G-B-D#-F# A-C#-E-G# B-D#-F#-A C#-E-G#-B D#-F#-A-C#
F Major Scale Four-note chords
Degrees Imaj7 iim7 iiim7 IVmaj7 V7 vim7 viiø
Notes F G A Bb C D E
Chords Fmaj7 Gm7 Am7 Bbmaj7 C7 Dm7
Notes in chord F-A-C-E G-Bb-D-F A-C-E-G Bb-D-F-A C-E-G-Bb D-F-A-C E-G-Bb-D
G Major Scale Four-note chords
Degrees Imaj7 iim7 iiim7 IVmaj7 V7 vim7 viiØ7
Notes G A B C D E F
Chords Gmaj7 Am7 Bm7 Cmaj7 D7 Em7 F#dim
Notes in chord G-B-D-E A-C-E-G B-D-F#-A C-E-G-B D-F#-A-C E-G-B-D F#-A-C-E
A Major Scale Four-note chords
Degrees Imaj7 iim7 iiim7 IVmaj7 V7 vim7 viiø
Notes A B C# D E F# G#
Chords Amaj7 Bm7 C#m7 Dmaj7 E7 F#m7
Notes in chord A-C#-E-F# B-D-F#-A C-E-G#-B D-F#-A-C# E-G#-B-D F#-A-C#-E G#-B-D-F#
B Major Scale Four-note chords
Degrees Imaj7 iim7 iiim7 IVmaj7 V7 vim7 viiø
Notes B C# D# E F# G# A#
Chords Bmaj7 C#m7 D#m7 Emaj7 F#7 G#m7
Notes in chord B-D#-F#-G# C#-E-G#-B D-F#-A#-C# E-G#-B-D# F#-A#-C#-E G#-B-D#-F# A#-C#-E-G#

Understanding the table and its symbols

The tables gives plenty of information and if you don't grasp all please read on.

Degrees: Refering to the relations of the notes in the scale on a general basis. These have Roman numerals as you can see below
Notes: Simply refering to the notes in the particular scale.
Chords: Refering to the chord with the same tonic as the note.
Notes in chord: Simply refering to the notes beloning to the chord.
Roman numerals: Roman numerals indicate chord names. uppercase Roman numerals are representing major chords while lowercase Roman numerals are representing minor chords.
°: The degree symbol represent diminished (dim).
Ø: This symbol represent a half-diminished chord.

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