Contrary motion
Definition
Contrary motion refers to melodic lines or voices that move in opposite directions. When one line ascends, the other descends, creating a pleasing and balanced musical effect.
Analogy
Imagine two synchronized swimmers performing a routine in a pool. As one swimmer gracefully dives underwater, the other elegantly emerges above the surface. Their movements mirror each other but in opposite directions, just like contrary motion in music.
Related terms
Parallel motion: In contrast to contrary motion, parallel motion occurs when two melodic lines or voices move in the same direction at the same interval. It can create a sense of unity and harmony.
Oblique motion: Oblique motion happens when one voice remains stationary while another voice moves up or down. It can add stability and emphasis to certain notes within a musical passage.
Counterpoint: Counterpoint refers to the art of combining multiple independent melodic lines that are harmonically interdependent. Contrary motion is often used as a technique in counterpoint compositions.
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