Blues (BLUES), also known as the slow four-step dance, is a social dance popular in Europe in the early 20th century. Its dance music comes from the melancholy music of the black people in America. The blues dance steps are simple but solemn, retaining the palace color and classical charm. Its rhythm and movements change little, its advance and retreat are smooth, and its jumps are leisurely and unhurried, giving people a sense of comfort, leisure, peace, and freedom. Its dance steps are easy to master and have a graceful and elegant demeanor, so it is nicknamed "Standard Bridge" and is also called enlightenment dance. Blues music is in 4/4 time, with a rhythm of boom, boom, boom, boom, and a speed of 30 bars per minute. The basic footwork is two slow and two fast, with the slow step accounting for two beats and the fast step accounting for one beat. The first beat is the accent, the third beat is the sub-accent, and the second and fourth beats are the light tone. When the dance begins, it must be stepped on the accent of the first and third beats. Its basic steps are "sliding" dance steps consisting of regular steps, horizontal steps and parallel steps.

Blues is a music genre created by African descendants in the United States. It, like jazz, has become one of the few new art forms produced in modern times. It should also be regarded as a kind of indigenous folk music, which took shape around 1900. Since blues music has no fixed rules, even musicians and singers without strict training can use it skillfully. The performances of these people often create direct and subtle communication with the audience. The emancipated slaves hummed while working. Most of the tunes were passed down from generation to generation by their ancestors. The lyrics also contained ridicule of worldly affairs and simple fantasies. These lyrics expressed their yearning for life, The longing for love and freedom from bondage.