The lowest normally recognised is the 'contralto'.
Contalto
Bass is the name of a very low male singing voice.
The lowest female voice is the Contralto; also considered the rarest in occurrance.
The lowest female voice in a choir is called a contralto or, more commonly, an alto. This voice is also referred to as a "second alto."
The lowest male voice is base, slightly higher is base-baritone, then baritone, the highest male voice is tenor.
Contalto
The lowest female voice is called contralto.
Bass is the name of a very low male singing voice.
The lowest female voice is the Contralto; also considered the rarest in occurrance.
Baritone
Bass is below Baritone and the lowest male voice range
The singing ranges for a baritone voice typically range from around G2 to G4.
The lowest singing voice is the male voice called bass.
Reba is a Contralto which is the lowest female singing voice. She has a pretty big range for one too.
The lowest female voice in a choir is called a contralto or, more commonly, an alto. This voice is also referred to as a "second alto."
a bass is the lowest male singing voice.
The lowest male voice is base, slightly higher is base-baritone, then baritone, the highest male voice is tenor.