It's like a conversation between the musicians. In blues music, the singer would sing a line and a musician would play the response on an instrument. Jazz and blues musicians often make up parts ...
The structure of blues music is still heard today in lots of different genres of music. Call and response close call and responseWhere one melody is answered by another. is a feature of work songs ...
A lot of blues is about men and women, and relationships. Blues was sung at rent parties, where you'd play music and pass the hat to pay your rent. Or they'd be in shacks behind the fields ...