This is quite interesting. Surely someone will recognise him. It would be quite easy for an experienced Piano teacher to recognise the literature he plays. Obviously he is accustomed to playing a grand piano, which points to being a performer. I good university prof of piano, classical radio DJ, or an affectionado of classical piano Music who keeps up with the latest recordings would probably recognize the young man's interpretative style. If a recording artist, the pic should be sent out to all the classical style radio stations possible. Even victims of amnesia, senile dementia & alzheimer's disease usually retain their Music knowledge, and this will likely bring back his memory if it is lost. I'll send out good thoughts for him.