Blues (also translated as blues) is a kind of vocal and instrumental music based on the pentatonic scale. Another feature of it is its special harmony. Blues is a singing form that emerged among black folk after the Civil War. It has a direct relationship with black plantation songs (a cappella songs sung by collectives during labor). Blues originated from the hymns, hymns, labor songs, shouts and chants of African American slaves in the past. The "blues sound" used in the blues and the singing style of Qi Ying both show its West African origin. Blues had a great influence on later American and Western pop music. Ragtime, jazz, big band, rhythm and blues, rock and roll, country music and ordinary pop songs, and even modern classical music all contain blues elements or elements. Developed from blues. In poetry, the word is often used to describe melancholy. American popular music form. Also translated as blue tone. The original meaning is to be emotionally sad. A large part of black songs describe the feelings of life and death, and express sadness and misery. The word blues is very appropriate to summarize it. After using it for a long time, it became the general term for this type of black songs, and then became the name of black people in the United States. A typical tune in music. Blues originated around the end of the 19th century and was formed by a combination of labor songs, spirituals and field chants sung by black Africans who were sold to slaves in manor houses in the southern United States. The original blues were basically songs, with only guitar accompaniment. Later, other instruments were gradually added, and blues specifically for instrumental music appeared. The most famous blues singer is Bessie Smith. The first person to write down the blues and submit it for publication was W.H. Handy, known as the King of the Blues.