Dansm's Guitar Chord Theory
Summary of Chord Formations
This page will outline and summarize all the chord types considered in my chord theory pages. Make sure you first have an understanding of keys and intervals. The chart below gives chord type, the notes making up that chord, the notes making up that chord based on G, one possible way to form that chord based on G, and the proper notation for that G chord.

major

1-3-5

G-B-D

320033

G

minor

1-m3-5

G-Bb-D

355333

Gm

diminished

1-m3-5

G-Bb-Db

3453xx

G

seventh

1-3-5-m7

G-B-D-F

320001

G7

minor seventh

1-m3-5-m7

G-Bb-D-F

353333

Gm7

major seventh

1-3-5-7

G-B-D-F#

320002

Gmaj7

sus2

1-2-5

G-A-D

3x0233

Gsus2

sus4

1-4-5

G-C-D

3x0013

Gsus4

fifth

1-5

G-D

355xxx

G5

sixth

1-3-5-6

G-B-D-E

320030

G6

ninth

1-3-5-m7-9

G-B-D-F-A

32323x

G9

add9

1-3-5-9

G-B-D-A

3x0203

Gadd9



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1998 Daniel E. Smith.