Can I ask a question under this topic please? As I understand it a
castralto used to sing alto and male soprano. Now, an alto is also
called a counter tenor and a female singing the same part is a contralto.

Assuming that this is correct then what is falsetto? Is it when a man sings
alto, soprano or both? Hence is alto considered to be a natural register
for a man?

Bob Draper
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