You've surely heard about blues music, but there is also a dance called blues, and it it the slowest of all swing. He is often, but not always sad: the blues can be both fun and cheerful, but always soft. Lingering and smooth, he asks to move as if in honey.
The blues is danced a lot in a close position, like balboa, but there are no rotations like there. You can move a lot, or you can move a little; as in other swing dances, there is a lot of room for improvisation.