2) My italian is a little off, what does "marcato il basso" stand for? "_____ the base" I assume?
It means "bring out the bass line". No need to be fluent in Italian, but you should really get a musical lexicon to explain common musical terms like this !
3) How flexible with the tempo? There is a fine line between artistic presentation and newbie slaughter!
Yeah so true. Nobody know where that line is, but once you cross it, be sure we'll tell you
Seriously, it is just a bit rigied. Some judicious rubato, e.g. at the end of phrases, would make it much more interesting. But never overdo it, that is the worst thing to do.
Maybe I should then compensate by turning up the volume on the keyboard a little.
Sure, or better, tuen up the Edirol's input volume dial, assuming the R9 has one like the R1. Or do it later on the PC using Audacity or similar. It is imprtant that your recordings are comparable in output volume (not always easy to achieve though).
5) German Dance = 50%. I know there are mistakes and plenty of them. I just posted it to ask whether or not I should use more pedal?
The one or two mistakes are not your problem. They'll be gone soon enough. It is the rhythmic instability you need to work on. This is a Ländler, the German cousin of the Waltz, and should be played in a similar fashion. That also implies you can use some pedal, as long as it does not blur the harmonies.
6) I cannot go about pressing down on the keys too hard because, as you observed Mr. B, the edirol will pick up on that sound. and to me it is as annoying as mistakes in playing. There is nothing I really can do about it, except by a real piano or glue pieces of rubber on the keys to act as dampers.
That is bad. Can't advice about that...
7) Debut= I did it with a rush, just to see how this works. Now that I broke the ice, I can sit back and really work on it. You might be asking, "wouldn't it be the other way around?" Truthfully...yes...but that's not how I operate
Good job we do not criticise in a rush