A choir is a vocal group or group of people who perform a piece of music in a sung and coordinated way.
A group of often professionally trained individuals who can collectively perform sung works through the intervention of their voices led by a conductor or teacher is called a singing choir.
A choir has the ability to interpret monodic works or one voice, or polyphonic, that is, several simultaneous voices. As such, the chorus is made up of different types of voices that are grouped into strings. In the case of female voices, there is the soprano, which is the highest voice and which often leads the main melody of the work, the mezzo-soprano, a more frequent and intermediate voice for women, and the alto, the deepest voice among women. In the case of male voices, we can find the falsetto, a male voice that imitates or resembles the register of a soprano, the countertenor, the highest male voice that the alto register can reach and which is considerably uncommon. among men, the tenor, the high-pitched voice of the male, and the baritone, the most common voice among the male. Bass and deep bass, which are the lowest among men's voices, are also counted.
At the same time, there is a choral typology that allows them to be classified according to various criteria. When it comes to instrumental criteria, the chorus can be: "a cappella" (without the accompaniment of instruments) or concertante (with accompaniment). When the criterion is for timbre and tessitura, there are choirs of equal voices (white, bass, two or more voices) and choirs of mixed voices. If we speak of a choir based on the composition of their voices, we speak of a choir when it comes to a children's choir (often linked to religious settings), the women's, men's and mixed choir. Choirs are also classified according to their size, and then one can speak of quartets, octets, chamber choir (from 12 to 20 members), symphonic (from 30 to 60), orpheon or great choir (with more than 100 members ).
