A complementary information has been added to enrich the original source of information.
Chord Formulas
( ) = OPTIONAL NOTEMAJOR
| Chord Type | Symbol | Formula |
|---|---|---|
| Major | M, Maj | 1-3-5 |
| Added Fourth | add4 | 1-3-4-5 |
| Sixth | 6 | 1-3-5-6 |
| Six Nine | 6/9 | 1-3-5-6-9 |
| Major 7th | Maj7 | 1-3-5-7 |
| Major Ninth | Maj9 | 1-3-5-7-9 |
| Major Eleventh | Maj11 | 1-3-5-7- (9)-11 |
| Major Thirteenth | Maj13 | 1-3-5-7-(9)-(11)-13 |
| Major seven sharp eleventh | Maj7#11 | 1-3-5-7- #11 |
| Major Flat Five | - | 1-3-b5 |
MINOR
| Chord Type | Symbol | Formula |
|---|---|---|
| Minor | m | 1-b3-5 |
| Minor added fourth | madd4 | 1-b3-4-5 |
| Minor sixth | m6 | 1-b3-5-6 |
| Minor seventh | m7 | 1-b3-5-b7 |
| Minor added ninth | madd9 | 1-b3-5-9 |
| Minor six add nine | m6/9 | 1-b3-5-6-9 |
| Minor ninth | m9 | 1-b3-5-b7-9 |
| Minor eleventh | m11 | 1-b3-5-b7-(9)-11 |
| Minor thirteenth | m13 | 1-b3-5-b7-(9)-(11)-13 |
| Minor/Major seventh | m/Maj7 | 1-b3-5-7 |
| Minor/Major ninth | m/Maj9 | 1-b3-5-7-9 |
| Minor/Major eleventh | m/Maj11 | 1-b3-5-7-(9)-11 |
| Minor/Major thirteenth | m/Maj13 | 1-b3-5-7-(9)-(11)-13 |
| Minor seven flat fifth | m7-5 or ø | 1-b3-b5-b7 |
DOMINANT
| Chord Type | Symbol | Formula |
|---|---|---|
| Seventh | 7 | 1-3-5-b7 |
| Ninth | 9 | 1-3-5-b7-9 |
| Eleventh | 11 | 1-(3)-5-b7-(9)-11 |
| Thirteenth | 13 | 1-3-5-b7-(9)-(11)-13 |
| Seven sharp five | 7#5 | 1-3-#5-b7 |
| Seven flat five | 7b5 | 1-3-b5-b7 |
| Seven flat ninth | 7b9 | 1-3-5-b7-b9 |
| Seven sharp ninth | 7#9 | 1-3-5-b7-#9 |
| Nine sharp five | 9#5 | 1-3-#5-b7-9 |
| Nine flat five | 9b5 | 1-3-b5-b7-9 |
| Seven sharp five sharp nine | 7#5#9 | 1-3-#5-b7-#9 |
| Seven sharp five flat nine | 7#5b9 | 1-3-#5-b7-b9 |
| Seven flat five sharp nine | 7b5#9 | 1-3-b5-b7-#9 |
| Seven flat five flat nine | 7b5b9 | 1-3-b5-b7-b9 |
| Seven sharp eleven | 7#11 | 1-3-5-b7-#11 |
Symmetrical
| Diminished | dim (° ) | 1-b3-b5 |
| Diminished Seventh | dim7 (°7) | 1-b3-b5-bb7 |
| Augmented | aug (+) | 1-3-#5 |
Miscellaneous
This section contains diadic "fifth" (2 note 'chords'),
the "Sus" chords, and the #11. A #11 contains a perfect fifth
as well as a sharp eleven, (which is the same note as a flat five but an octave higher).
These chords do not have a Major or Minor tonality, since there is no 3rd. However the #11 chord does have a Lydian sound.
| Chord Type | Symbol | Formula |
|---|---|---|
| Fifth | 5 | 1-5 |
| Flat Fifth | -5 | 1-b5 |
| Suspended Fourth | sus4 | 1-4-5 |
| Suspended Second | sus2 | 1-2(9)-5 |
| Sharp Eleven | #11 | 1-5-#11 |
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