[Coda]

*experiments around a bit*

Dang accursed sine waves. XD I was about to post about octave number confusion because I thought my A was 440Hz (and therefore A4) and I can hit the E an octave + a fifth above that. Turns out, no, my fundamental on that A is 220Hz and it's just the harmonics in my skull blending in with the sine wave from the tuner throwing me off, and my high note is an E5 just like yours.

That's a slight decrease in my range. I used to be able to hit F#5. I can still put the musculature in my throat in the position that feels like it ought to at least produce an F5, but it still comes out as an E. ^^() I'm probably just out of practice.

I can hit an E2 on the other end, but my throat just won't open any wider than that. I have enough control over the E2 to tune it, but there's no way in heck I can hit the D#.