DJs usually play music and adjust music in entertainment venues.

The full name of R&B is Rhythm & Blues, which is generally translated as "Rhythm & Blues". In a broad sense, R&B can be regarded as "black pop music". It originated from black blues music and is the basis of today's western pop and rock. Billboard magazine once defined R&B as all black music, except for Jazz and Blues. It can be classified as R&B, which shows how broad the scope of R&B is. Hip Hop and Rap, which have become very popular in the black music circle in recent years, both originate from R&B, and at the same time retain many R&B elements.

The birth of rhythm and blues (R&B) can be traced back to the mid-1940s. Early R&B was called jump blues.

Jump Blues absorbs the horn-driven lineup of jazz and the rhythm of swing, and also combines the basic overlapping singing method of blues music (Blues). Riff) and string performance have become a new form of music. It can also be said that Jump Blues is a combination of Rhythm Jazz and Blues.

Although Jump Blues absorbed a large part of the characteristics of Blues, it was rhythm jazz that finally laid its basic structure and formed a new musical style. But jump blues has a faster rhythm, rougher singing, and its use of instruments is also different from jazz and blues: the piano playing has a strong rhythm, and the most important SAX performance is sharper. Early Jump Blues was still black music: its singers and listeners were all black.

In Jump Blues, the singer is called "Shouter". Many famous Jump Blues Shouter are from big bands (Big-Band), such as Big Joe Turner, who is From Kansas City jazz bands. There were also some famous Shouters at that time, such as Wynonie Harris, Roy Brown, Roy Milton and Nappy Brown.

Louis Jordan had a very important influence on the history of Jump Blues. He often played some songs with witty lyrics. Since these songs are particularly suitable for dance music, they have become more and more popular. More and more white teenagers are falling in love with this kind of music. Other black musicians such as Chuck Berry, Joe Liggins, Tiny Bradshaw, Amos Milburn, Camille Howard and other black musicians were also famous Jump Blues musicians at that time.

In the 1950s, thanks to the efforts of outstanding musicians, Jump Blues finally broke through racial boundaries and became a new music style accepted by the public. It was also in the 1950s that In the 1990s, Jump Blues was renamed "R&B" and entered the Billboard chart.

When "R&B" appeared in the mid-1940s , it doesn’t even have a name yet. But as soon as the word appeared, it spread quickly and widely. Today, R&B has become synonymous with black pop music, although it is regarded more as a type of music that is different from rap, soul, and urban by special audiences and Mentioned by people in the recording industry. Early rock music was based on R&B, which was an extension of "country and western music" influenced by pop music.

R&B is not only an important transitional music between blues and rock music, it is also the most important musical branch between blues and soul music.

Of course, blues is undoubtedly an important part of R&B, but the jazz element is equally important. The earliest R&B artists came from the fields of "Big-Band" and "Swing-Jazz". Before World War II, when jazz was far more popular than it is today, it was music played for dancing, but there was usually a singer in the band. During World War II, many important jazz artists began to develop "Be Bop" and "Cool Jazz", a type of jazz with fewer dance elements. However, due to the influence and constraints of economic, military and other factors during the war, the number of "big bands" began to gradually decrease. But listeners, especially those in the rapidly growing African-American communities in big cities, still wanted to hear danceable music. So in order to adapt to the audience, musicians made "Boogie" music that was louder, used more electroacoustic instruments, and focused on "riff".

The R&B style that first became popular is usually referred to as "Jump Blues". It not only absorbs the swing rhythm and horn-based arrangement in jazz, but also absorbs the reply sections and harmonic structures commonly used in blues. Perhaps the most important pioneer of this style was Cab Calloway. On "Jump Blues," the singer's voice is harsher, the tempo is faster, and the instruments are played differently—the piano is played harder and the saxophone has a longer, sharper sound.