That first guy doesn't sing that high. His highest note is the D an octave and a note above middle C, easily reachable through trained falsetto. I take voice lessons as part of my music degree at the U of C and can hit all those notes with relative ease. I am a tenor, but actually what is surprising is that given the nature of the falsetto, most contra-tenors (ie those with trained falsetto) are actually baritones or basses and have low speaking voices.
He does a good job but in no way is it really out of the ordinary.
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