"Basso Profundo"
The lowest singing voice is the male voice called bass.
Bass is the name of a very low male singing voice.
The lowest female voice is called contralto.
Bass
The lowest female voice is the Contralto; also considered the rarest in occurrance.
The lowest singing voice range is called the bass. It is lower than the tenor, baritone, and alto ranges. Bass singers typically have a deep and rich tone, making them well-suited for roles in classical music and choral ensembles.
The lowest singing range a person can achieve is called the bass range, which typically spans from E2 to E4 on the musical scale.
That would simply be the TUBA!
a bass is the lowest male singing voice.
With a very singing tone
The lowest normally recognised is the 'contralto'.
The lowest male voice is base, slightly higher is base-baritone, then baritone, the highest male voice is tenor.