castrato
The castrato was a type of male singer in the 17th, 18th, and 19th centuries who went through a surgical procedure, known as castration, to eliminate certain physical characteristics that were believed to be necessary for achieving exceptionally high singing voices in the soprano or alto vocal ranges.
The practice of castrating young boys to create singing voices began in the 17th century in Italy,
Castrati developed the reputation for being incredibly talented singers, capable of producing complex and emotionally powerful
However, the practice of castrating boys to create singing voices started to decline in the 19th century,