I have been trying since then to "shut myself up" and listen to a real piano sound in my head.
I hear piano all the time. at least when piano pieces are in my head. If it's a Symphony I hear all the other instruments too, with their specific sound. It plays in my head like my head was a stereo system.
Me, too, pianowolfi. But be very careful the music playing in your head isn't still under copyright. The thought police will get you if you aren't paying royalities. I almost lost my shirt on York Bowen's "Fantasia." Too many unauthorized "head peformances," they said. But, then again, that was some voice in my head telling me that. Hmmm. Should I be worried about this?? (I'll have to ask pianistimo. She'll know.)