The production of sound from the vocal cords, often used in music. The voice falls into six basic categories defined by pitch, ranging, from bottom to top, Bass, Baritone, Tenor, Contralto, Mezzo Soprano, and Soprano (three male and three female). The voices are sufficiently different in timbre to be easily distinguished, even when singing the same pitch. Two exceptions are the Castrato and Countertenor in the male voice which are rare.
See also singing, soprano, mezzo soprano, contralto, castrato, countertenor, tenor, baritone, bass, head voice, chest voice, voce di testa, and voce di petto.