Barbershop music countertenor, the baritone resembles the Heldentenor or lyric baritone in range and a tenor in tessitura, and the lead generally corresponds to the tenor of classical repertoire, with some singers possessing a tessitura more similar to that of a high baritone. Barbershop singing is performed both by men's and women's groups; the elements of the barbershop style and the names of the voice parts are the same for both. The defining characteristic of the barbershop style is the "ringing" chord, one in which certain overtones of the four voices reinforce each other, sometimes so strongly that the overtone is perceived
British Association of Barbershop Singers British Association of Barbershop Singers The British Association of Barbershop Singers (BABS) is a British organisation of male barbershop singers. It was formed in 1974 and is affiliated with the Barbershop Harmony Society. Every year the association runs two contests in parallel for barbershop choruses and quartets as part of the BABS Annual Convention. The British convention is the largest barbershop convention of its kind outside of North America. The chorus competition is currently held over one day, while the quartet competition is spread over the convention weekend (with a preliminary round to eliminate all but the top 16 quartets