Okay sorry I haven't read the whole thread yet but please, PLEASE, for the love of God, understand that a castrato is not the same thing as having a high pitched voice. Tonally they're completely different, and I don't want to get deep into it, but compare the voice of a 9 year old boy to the voice of an adult doing a "boy voice" like you'd see in a cartoon; going through puberty structurally changes your vocal cords in such a way that it's nigh-on impossible for a sexually-mature adult to imitate the register of a child. Shmorky does not sound like an adolescent boy, he sounds like a guy on helium, or a voice actor doing a nasal-y nerd voice. Unless someone literally chopped off his ballsack before he hit puberty, he is a soprano. Please, please, PLEASE, stop calling him a castrato. 100% sure you've never heard a castrato in your life anyway, seeing as the last castrato stopped singing over 100 years ago.