Maria João Pires is in Brazil, in Lauro de Freitas, Salvador, Bahia State.
She is well known there.
As you know, she is portuguese, but she went to Brazil after her project of Belgrais, in Portugal, failed.
Just now, I think she is for a time in Portugal, trying a new project like Belgrais, but I am not quite sure.
I think you may ask for her sending a letter to Conservatório Nacional de Mùsica, Rua dos Caetanos, Lisboa, Portugal. There someone may tell you where Maria João Pires is just now.
I must apologize for my English.
Best wishes
Rui