Recovering...
Added 2017-04-26 01:51:38 +0000 UTC... I can breathe much better now and I don't hear wheezing all the time.
A brief test of my headset-mic showed, however, that it's not going to provide good quality sound for the recording, so I'll have to use my prior equipment and find a way to adjust the sound level up without adding noise (another problem with the headset is that it seems to be receiving some kind of interference noise that I can't locate).
I'll probably record Prologue 2 of Polychrome on Thursday. If that comes out sounding better I'll re-record Prologue 1.