Ineresting. Did you know it was codified in the era of barbershop revival ? It is also a a capela close harmony style
I do too. It was codified in the revival area (1930s - present). It is a style of cappella close harmony.
I like barbershop music its kind of cool in an old school way
Barbershop vocal harmony, as codified during the barbershop revival era (1930s–present), is a style of a cappella close harmony, or unaccompanied vocal music, characterized by consonant four-part chords for every melody note in a predominantly homophonic texture.