Hello, all. Been awhile since I have posted here. I was just looking to inquire of the amassed experience and knowledge at this site. I am wondering what makes "Barbershop" uniquely what it is. I do understand that there are very particular harmonies, etc...but, in the vernacular, what would it all be called (technically speaking). How does it relate to itself, and how does it differ from other harmony structures? Is it prone to 5ths? 7ths, what makes it "Barbershop"? Thanks in advance! :)
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