Martha Argerich and Widmung, Schumann/Liszt

[silvestrione]

I see Martha Argerich played this in London recently as an encore, after Prokofiev 3. Is this a rare case of a new piece added to her solo repertoire? On youtube I can only find a clip of Nelson Freire playing it TO her (introducing it?).

I know she plays all sorts of things from the score, but presumably, as a concerto encore, this was not.

[gradus]

I'd liked to have heard her as I'm particularly fond of the Liszt song arrangements which are far removed from simple transcriptions. Widmung is wonderful and so is Auf dem Wasser zu singen, just as one might expect from the splendid Franz.