That is the rhythm of three-quarter time, a common rhythm in waltzes. In dance, it is usually the music used for waltz.

Waltz, also known as round dance, is a form of self-entertainment dance. It is the earliest and most vital form of self-entertainment dance in ballroom dance. This quite clearly captures the basic elements of the waltz movement.

After the waltz was divided into fast and slow according to the speed, people called the fast waltz the Viennese waltz, while the slow waltz without the word "Vienna" was called the slow waltz, which evolved from the Vienna waltz. As a three-step dance, the basic steps of the waltz are one step on one beat and three steps on three beats in each section, but there are also specific dance steps of two or four steps in one section.