Who does the Chorus consist of?

Answer 1

Most often choirs consist of four sections intended to sing in four part harmony, but there is no limit to the number of possible parts as long as there is a singer available to sing the part. Choirs can be categorized by the voices: Mixed choirs (i.e., with male and female voices). This is perhaps the most common type, usually consisting of soprano, alto, tenor and bass voices, often abbreviated as SATB. Often one or more voices is divided into two, e.g., SSAATTBB, where each voice is divided into two parts, and SATBSATB, where the choir is divided into two semi-independent four-part choirs. Occasionally baritone voice is also used (e.g., SATBarB), often sung by the higher basses. In smaller choirs with fewer men, SAB, or Soprano, Alto, and Baritone arrangements allow the few men to share the role of both the tenor and bass in a single part. Male choirs, with the same SATB voicing as mixed choirs, but with boys singing the upper part (often called treble or boy soprano) and men singing alto (in falsetto), also known as countertenor. This format is typical of the British cathedral choir. Female choirs, usually consisting of soprano and alto voices, two parts in each, often abbreviated as SSAA, or as soprano, soprano II, and alto, abbreviated SSA Men's choirs, usually consisting of two tenors, baritone, and bass, often abbreviated as TTBB (or ATBB if the upper part sings falsetto in alto range like barbershop music, even though this notation is not normally used in barbershop music). Occasionally, a men's choir will have Basso Profondo, the lowest of all male vocal ranges. Children's choirs, often two-part SA or three-part SSA, sometimes more voices. This includes boys' choirs.

Answer 2

Soprano, alto tenor and bass voices