The original juke joints were small, often one room, establishments where people came to socialize, drink, gamble and of course listen to music.
One of the most famous juke joints is Ground Zero Blues Club, and is partially owned by Morgan Freeman. Many famous artists as well as not so famous artists have played there. Pretty funky and cool place.
This guy's harmomica was wireless to the sound system so he roamed around while he played. We saw him with several groups and he got totally going with the music, dancing and playing.