Here's a song, sung by castrato Alessandro Moreschi (1858–1922).
Castrato are eunuch made to sing, so that they have female's high pitch but male's power.
Alessandro Moreschi is the only recorded castrato singing.
This is god howling. At 2:25, souls are touched.
for another, inhuman sining of high pitch, see Diva Dance Song from The Fifth Element