Mark ~ Thank you for your comments! I appreciate it. Yes, there IS definitely something resonating with the A below Middle C. I think it is part of the piano, unfortunately, so I have to have Sally take a look at it next time she is here to tune it.
Chris ~ Thank you so much! I am glad you had a chance to listen. I hear what you and Eddy are saying about the dynamic contrast. I'll submit this again along with the Tango, after I've had a few more days to live with both pieces.
My piano tech voiced everything down last time she was here, and the very top notes are still a little soft. I would like the treble to be brighter (Malagueña is giving me fits in that regard), but the strings are also 43 years old, so when it is bright it has false beats (which bothers my tech more than me, but I can't afford new strings yet, LOL). I can try to bring out the top note more. It's there, just very very very soft (but hey, it's marked ppp).
Also, I am still learning to use GVerb, but will see what I can do. The first time I used it, it sounded like a giant piano in a huge, empty hall. I cracked up laughing. I found a Wikipedia page with several settings to experiment with, so I'll do that.