List of basses in non-classical music
The bass singing voice has a vocal range that lies around the second E below middle C to the E above middle C (i.e., E2–E4). As with the contralto singing voice being the rarest female voice type, the bass voice is the rarest for males, and has the lowest vocal range of all voice types.
Source: Wikipedia — List of basses in non-classical music (CC BY-SA 4.0)