The tonic chord is the chord that represents the key of the piece. It is usually the first chord in a musical progression, and it helps to establish the overall tonality of the piece.

The dominant chord is the chord that creates a sense of tension in a musical progression. It is usually the fifth chord in a major key or the fourth chord in a minor key, and it helps to drive the progression forward.

The subdominant chord is the chord that adds color and interest to the harmony of a musical progression. It is usually the fourth chord in a major key or the third chord in a minor key, and it helps to create a sense of movement and variety in the progression.

The mediant chord is the chord that adds color and interest to the harmony of a musical progression. It is usually the third chord in a major key or the second chord in a minor key, and it helps to create a sense of movement and variety in the progression.

The submediant chord is the chord that resolves a musical progression. It is usually the sixth chord in a major key or the fifth chord in a minor key, and it helps to bring the progression to a close.

The leading tone chord is the chord that creates a sense of tension in a musical progression. It is usually the seventh chord in a major key or the sixth chord in a minor key, and it helps to drive the progression forward.

The diminished chord is the chord that creates a sense of tension in a musical progression. It is usually used as a passing chord or as a chord that leads to a dominant chord.

The augmented chord is the chord that adds color and interest to the harmony of a musical progression. It is usually used as a passing chord or as a chord that leads to a dominant chord.

The suspended chord is the chord that adds color and interest to the harmony of a musical progression. It is usually used as a passing chord or as a chord that leads to a dominant chord.

The polychord is the chord that adds color and interest to the harmony of a musical progression. It is usually used as a passing chord or as a chord that leads to a dominant chord.

The cluster chord is the chord that adds color and interest to the harmony of a musical progression. It is usually used as a passing chord or as a chord that leads to a dominant chord.

The quartal chord is the chord that adds color and interest to the harmony of a musical progression. It is usually used as a passing chord or as a chord that leads to a dominant chord.

The quintal chord is the chord that adds color and interest to the harmony of a musical progression. It is usually used as a passing chord or as a chord that leads to a dominant chord.

The sextal chord is the chord that adds color and interest to the harmony of a musical progression. It is usually used as a passing chord or as a chord that leads to a dominant chord.

The septimal chord is the chord that adds color and interest to the harmony of a musical progression. It is usually used as a passing chord or as a chord that leads to a dominant chord.