A soprano has a voice ranging approximately from the A below middle C to the C two octaves above middle C on a piano
In four part choral harmony, the Soprano takes the highest part, and will usually take the melody
The word Soprano generally refers to a female singer of this highest vocal range as well as to the quality of her voice.
Male singers whose voices have not changed are known either as Boy Sopranos or Trebles.
Some adult male singers use a special technique without using falsetto in order to sing in this high range, and they are known as Sopranistas