A sequence of chords consisting of intervals that do not change as the chord moves. For example, a major chord of C, E, and G (with the intervals of a major third between the C and E and a minor third between the E and G) would be parallel to a following chord of F, A, and C (again a major chord with the intervals of a major third between the F and A and a minor third between the A and C), which, in turn, would be parallel to another major chord consisting of G, B, D, etc. This is also referred to as parallel motion.

See also parallel motion.

(Play example)

SUGGESTED LISTENING EXAMPLE:

Debussy: Préudes, Book I, "La cathédrale engloutie"

W. W. Norton - 4-CD Musical Example Bank -- Disc 3, Track 34