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, "juke joints" where people would drink, dance, and hear music.

The 32nd River City Blues Festival took place on March 14-15, bringing a wide array of nationally recognized blues musicians ...

If that rhythmic element was emphasized in order to make it easier to dance to ... it rhythm & blues. There have been doctoral dissertations written on the modalities of the music and the artists ...

They were a place to meet, dance, and just have a good time ... and the access to the American Blues music scene, Blues dances came into their own. You look nice. Hey, you look great!