A chromatic key is described as the pitch of a tone measured in vibrations per second or the pitch range of a composition, scale, or instrument, that range being the distance from the primary keynote to it's octave up or down the scale.
Enharmonic is the identical tone or chord included within a different key or scale.
Diatonic means within the key or the tones (notes) included within that key.
A diminished or augmented note, chord, or interval is the dissonance of the natural tone.
Understanding chord dissonance is crucial to maintaining key diatonic when composing or performing.
See also chromatic intervals and key signature for additional info.
| Key | Enharmonic | Diatonics |
| Ab | G# | Ab · Eb min · C min · Db · Eb · E min · G dim |
| A | A · E min · Db min · D · E · Gb min · Ab dim | |
| Bb | A# | Bb · C min · D min · Eb · F · G min · A dim |
| B | B · Db min · Eb min · E · Gb · Ab min · Eb dim | |
| C | C · D min · E min · F · Gb · A min · E dim | |
| Db | C# | Db · Eb min · F min · Gb · Ab · Eb min · C dim |
| D | D · E min · Gb min · G · A · E min · Db dim | |
| Eb | D# | Eb · F min · G min · Ab · Bb · C min · D dim |
| E | E · Gb min · Ab min · A · B · Db min · Eb dim | |
| F | F · G min · A min · Bb · C · D min · E dim | |
| Gb | F# | Gb · Ab min · Bb min · B · Db · Eb min · F dim |
| G | G · A min · B min · C · D · E min · Gb dim |
| Dissonance | Equivalent | Assignment |
| _aug | _#5 | augmented triad |
| _(no 3rd) | _5 | root and 5th |
| _6/7sus4 | _6/7sus | sus4 triad plus 6th and minor 7th |
| _dom7 | _7 | major triad and minor 7th |
| _7/add11 | _7/11 | minor triad · minor 7th plus 11th |
| _2 | _add9 | major triad and minor 9th |
| _sus | _sus4 | 4th from major triad minus 3rd |
| _#7 | _major7 | major triad · major 7th |
| _sus2 | _add9 | 2nd from major triad minus 3rd |
| _6/9 | _6add9 | major triad plus 6th add 9th |
| _9(#7) | _major9 | major triad · major 9th plus 7th |
| _m7 | _minor7(b5) | dim triad · half dim minor 7th |
| _9 | _dom9 | major triad · minor 7th plus 9th |
