"One feature which was necessitated by unaided vocal projection was the high vocal range used by many singers"

The high range of the singers in some of the recordings I'd played at a recent presentation was commented on by several listeners. More noticeable in the ones who were used to singing in public, I think.

"Why even bother responding to anonymous comments from trolls?"

Ooh, because sometimes you just feel like it. I can make my own decisions there, thanks.