Singer
- For the U.S-based maker of sewing machines, see Singer Corporation.
In classical music and in opera, voices are treated just like musical instruments, thus special careers were developed out of each principal pitch.
Voices are commonly classified into:
- Female voices:
- Male voices:
- countertenor
- tenor
- baritone
- bass
- castrato
- soprano castrato
- mezzo-soprano castrato
- alto castrato
- sopranista
- List of female singers
- List of male singers