

66.6% is a triplet swing where the first note is twice as long as the second. For example, 50% corresponds to perfectly straight time where both notes have an equal duration.

It describes the percentage of the beat that is taken up by the first note. The MPC swing system provides a good way to talk about different swing feels. Triplet swing is just one of many possible ways that subdivisions can be swung. The most common type of swing is a triplet swing in which the first note has twice the length of the second note. In jazz it’s typical for 8th notes to be swung and rock and hip-hop sometimes feature swung 16th notes. Swing refers to a type of rhythm where alternating subdivisions are given unequal durations, creating a long-short-long-short pattern.
