Bruce, after the Civil War are, in black folk have the form of a concert, it is black plantation songs (when the labor collective chorus unaccompanied songs) have the same strain relationship.

• 布鲁斯是南北战争后，在黑人民间产生的一种演唱形式，它与黑人的种植园歌曲（劳动时集体合唱的无伴奏歌曲）有着一脉相承的关系。