1, in terms of scope.
The definition of blues is broader, and blues includes R &；; B, modern blues, jazz blues and other different types, while R &；; B is rhythm and blues, which combines elements such as jazz and electronic blues with ordinary blues, and it is only an important part of blues.
2. Starting from the origin.
The origin of blues is earlier. It originated from the soul music and religious songs of black slaves in the United States in the past. The earliest blues came into being in 65438+1920s. The concepts of "R & ampB" and "R & AMPB" were put forward only in 1940, which originated from jazz during World War II.
3. Music style
At first, the blues were mostly improvised, and more were performed in the form of "one phone call at a time". And R & ampb originally absorbed the swing rhythm of jazz and the common reply and harmony structure of blues. After a slow development, R&; B's form is closer to that of rock music.
Baidu encyclopedia-blues
Baidu encyclopedia-rhythm and blues