A chromatic chord is a chord that contains one or more chromatic notes, which are notes that are not part of the diatonic scale of the key.

Seventh chords are the most common type of chromatic chord. They are formed by adding a seventh note to a triad, which creates a more complex and dissonant sound.

A double chromatic chord is a chord that contains two chromatic notes. Triple chromatic chords, quadruple chromatic chords, and quintuple chromatic chords are also possible, but they are much less common.

A chromatic bass chord is a chord that contains a chromatic note in the bass. This can create a more interesting and unexpected sound.

A chromatic melody chord is a chord that contains a chromatic note in the melody. This can create a more expressive and emotional sound.

A chromatic inner voice chord is a chord that contains a chromatic note in the inner voices. This can create a more complex and sophisticated sound.

A chromatic upper voice chord is a chord that contains a chromatic note in the upper voices. This can create a more bright and shimmering sound.

A chromatic middle voice chord is a chord that contains a chromatic note in the middle voices. This can create a more interesting and unexpected sound.

A chromatic lower voice chord is a chord that contains a chromatic note in the lower voices. This can create a more dark and mysterious sound.

A chromatic all-voice chord is a chord that contains a chromatic note in all of the voices. This can create a very complex and dissonant sound.

A foreign chromatic chord is a chord that contains a chromatic note that is not part of the key signature. This can create a very unexpected and dissonant sound.

A native chromatic chord is a chord that contains a chromatic note that is part of the key signature. This can create a more interesting and sophisticated sound.

A hybrid chromatic chord is a chord that contains a chromatic note that is both part of the key signature and not part of the key signature. This can create a very complex and dissonant sound.

A neutral chromatic chord is a chord that contains a chromatic note that is neither part of the key signature nor not part of the key signature. This can create a very unexpected and dissonant sound.

An ambiguous chromatic chord is a chord that contains a chromatic note that is both part of the key signature and not part of the key signature and neither part of the key signature nor not part of the key signature. This can create a very complex and dissonant sound.