Chord extensions are notes added to a chord that are not part of the basic triad or seventh chord.

Chord alterations involve changing one or more notes in a chord to create a different sound.

An appoggiatura is a non-harmonic note that is played before the main chord tone and resolves to it.

A suspension is a chord embellishment that involves playing a note that is not part of the chord and then resolving it to a chord tone.

A passing tone is a non-harmonic note that is played between two chord tones.

Chord alterations involve changing one or more notes in a chord to create a different sound. Adding a note that is a half step above or below a chord tone is a common type of chord alteration.

Chord alterations involve changing one or more notes in a chord to create a different sound. Adding a note that is a whole step above or below a chord tone is a common type of chord alteration.

Chord substitutions involve replacing one chord with another chord that has a similar function. This can be done to create a different sound or to make the chord progression more interesting.

Chord inversions involve playing a chord in a different position on the instrument. This can be done to create a different sound or to make the chord progression more interesting.

Chord extensions are notes added to a chord that are not part of the basic triad or seventh chord. Adding a note that is a third above the root is a common type of chord extension.

Chord extensions are notes added to a chord that are not part of the basic triad or seventh chord. Adding a note that is a fifth above the root is a common type of chord extension.

Chord extensions are notes added to a chord that are not part of the basic triad or seventh chord. Adding a note that is a seventh above the root is a common type of chord extension.

Chord extensions are notes added to a chord that are not part of the basic triad or seventh chord. Adding a note that is a ninth above the root is a common type of chord extension.

Chord extensions are notes added to a chord that are not part of the basic triad or seventh chord. Adding a note that is a eleventh above the root is a common type of chord extension.

Chord extensions are notes added to a chord that are not part of the basic triad or seventh chord. Adding a note that is a thirteenth above the root is a common type of chord extension.