Glossary
Chord Type
Glossary
A chord type is a set of up to twelve transpositions of a chord, ignore transposition. An OTC-equivalent musical object results in a named chord when combined with a root note.
In the following table, the chord types of the diatonic scale (first column) are given chord formulas (second column) as follows:
Augmented Triad
R 3 5
Major Third, Major Third
Major Triad
R 3 5
Major Third, Minor Third
Minor Triad
R ♭3 5
Minor Third, Major Third
Diminished Triad
R ♭3 ♭5
Minor Third, Minor Third
Major Seventh
R 3 5 7
Major Third, Minor Third, Major Third
Dominant Seventh
R 3 5 ♭7
Major Third, Minor Third, Minor Third
Minor Seventh
R ♭3 5 ♭7
Minor Third, Major Third, Minor Third
Minor Seventh ♭5 (Half-Diminished)
R ♭3 ♭5 ♭7
Minor Third, Minor Third, Major Third
A chord type is a set of up to twelve transpositions of a chord, ignore transposition. An OTC-equivalent musical object results in a named chord when combined with a root note.
In the following table, the chord types of the diatonic scale (first column) are given chord formulas (second column) as follows:
| Augmented Triad | R 3 5 | Major Third, Major Third |
| Major Triad | R 3 5 | Major Third, Minor Third |
| Minor Triad | R ♭3 5 | Minor Third, Major Third |
| Diminished Triad | R ♭3 ♭5 | Minor Third, Minor Third |
| Major Seventh | R 3 5 7 | Major Third, Minor Third, Major Third |
| Dominant Seventh | R 3 5 ♭7 | Major Third, Minor Third, Minor Third |
| Minor Seventh | R ♭3 5 ♭7 | Minor Third, Major Third, Minor Third |
| Minor Seventh ♭5 (Half-Diminished) | R ♭3 ♭5 ♭7 | Minor Third, Minor Third, Major Third |