Contralto

A contralto (Italian pronunciation: [konˈtralto]) (sometimes alto) is a classical female singing voice whose vocal range is the lowest of their voice types. The contralto voice type is fairly rare. A contralto's range is similar to that of a mezzo-soprano, and almost identical to that of a countertenor – typically from the F below middle C (F3 in scientific pitch notation) to the second F above middle C (F5), although, at the extremes, some voices can reach the D below middle C (D3) or the second B♭ above middle C (B♭5). The contralto voice type includes coloratura, lyric, and dramatic contraltos.