I really appreciate your answer. You've just gave me the best possible news. I wasn't sure about the reliability of such "gossip", I had never heard it before even though I've been playing the piano since I was a child (I was graduated from the Conservatory). 1/

I read it first on a post, then I tried to verify and I found this biography, published by The Cambridge University Press. I couldn't believe it, but I trusted the "authority" of the publisher. So, thank you twice.