Choirboy

[Vania]

Someone who grew up singing and going through all his school years being in the choir, then graduates and goes to college to study to be a choir teacher.

Returns back to his high school as a choir teacher, and enjoys the rest of his days teaching younger boys how to sing like girls.

[Lanell]

A [pure] and [innocent person] who does not have [a dirty] mind.

[Donald Trump]

A boy (or girl) who sings in a church or cathedral choir.

[Couch Potatoe]

A boy who sings in a church or cathedral choir.