Ever walk into a barbershop and just listen to the music they've got playing in there? Sounds like its own thing. I'm always curious about it when I go and get my hair cut.
There is a whole genre of music called Barbershop vocal harmony.  It is a cappella style consisting of four parts.
A whole genre of music.. Who would have thought. Wonder why that came about. Do you know the origins of it?
It started in the 1930's during the barbershop revival.
Can you get anymore specific? It's still kind of a cloudy picture
The music is performed by a barbershop quartet or a group of singers.  Each has their own vocal part.
What's the most fun fact you can tell me about this barbershop music? I want to be able to impress someone with it
The four parts are the lead, the melody, the tenor, and the bass.