musical-md wrote:
... no mannerisms or affectations { ... playing slowly and deliberately with the hand palm-up to strike a singular note with the flat nail of the finger!}:
Really! There is no need to play
palm up, when it's perfectly possible to strike a note with the flat fingernail
palm-down! All you need to do is curl your fingers so that their tips are at 180 degrees to the palm.

Quote:
How anyone could argue whether or not staccato is possible where there are no dampers is beyond me.
If you think that's what Chris and I argued then you have misunderstood us. What I've argued is that it may be possible that what Ginastera
meant by putting staccato marks on these particular notes is
not a simplistic "Play these notes short" (because I presume he knew this to be impossible), but rather "Do whatever you
would do to play these notes short
if it were possible" (and I have offered what I still believe to be a perfectly plausible reason why he might do so {and I should add that it is
only plausible; what the
true reason is, or indeed whether there even is one, I concede we will never know}, namely that a side-effect of the different form of attack would be to make dropped notes less likely - in other words it's an execution hint, in the same way a suggested fingering might be, to apply a technique which you may well have thought of independently: "What can I do to prevent these ppp notes from failing to sound? I know, I'll play them a bit more marcato. Oh, but wait a minute, this will boil down to raising the dynamic above the printed ppp. But this is contrary to instructions! What should I do?" By writing this "quasi-staccato" in for you, he is telling you that it's OK to do that). You may well ask "In that case why didn't he just write pp instead of ppp?" Perhaps he didn't want you to go all the way up to pp, but wanted to limit you to 2.5p, or 2.718281828p.
Quote:
Fortunately, the silence on the subject seems to indicate
agreement that
vibrato is not possible on the piano.

Oh yes it is! 
That's not too difficult a challenge to rise to: If the strings for every note are deliberately made out of tune with each other, so as to produce a difference-frequency beat, this can sound somewhat like vibrato. Moreover, if only one string (the third) is de-tuned, you can then use the una corda pedal to avoid striking it, thereby switching off most of the vibrato effect. Cool, eh? - Don't try this at home, kids!