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
Barbershop Harmony Society Sweetheart", "My Wild Irish Rose", etc.) Every member receives a booklet upon joining the society. The purpose of this collection is so that whenever any barbershoppers meet they will always have something ready to sing. The society has also published collections such as "Strictly Barbershop". Harmony Foundation International, a 501(c)(3) not-for-profit organization, was incorporated in 1959 as a charitable subsidiary of the Barbershop Harmony Society; it raises financial support for the society's programs. In 2003, in preparation for a new headquarters location, the Society sold both Harmony Hall, a historic lakefront mansion in Kenosha, Wisconsin, and its nearby facility (known