N-UNCOUNT (20世纪40年代由蓝调音乐演变成的)节奏蓝调,节奏布鲁斯(缩略形式为R&B) Rhythm and blues is a style of popular music developed in the 1940's from blues music, but using electrically amplified instruments. The abbreviation R&B is also used. (20世纪40年代由蓝调音乐演变成的)节奏蓝调,节奏布鲁斯(缩略形式为R&B)