Thank you so much Alan! I had a free morning this morning, so gave it one more shot ... re-recorded the track, applied lowering of the EQ at the low end as you advised, tinkered around with it ... and here is the result. It's safe to say that I am, personally, much happier with it now - but, if you (or anyone else, for that matter) have further thoughts on this, PLEASE let me know! THANK YOU!!!!!!

This first version here has reverb on it also (at 5% in Audacity).

https://audiomack.com/song/jamesdelsono/amazing-grace-1

I've also done a reverbless version (but still with EQ changes, as advised). I think it sounds better WITH reverb, but more authentic, as it were, without - I'll have to think about which version I prefer! haha. Again, any and all feedback welcome - and THANK YOU, EVERYONE, for having taken the time to encourage me and help me along. I wouldn't have given it another shot without your kind words.

https://audiomack.com/song/jamesdelsono/amazing-grace-take-4