Both my grandmothers had upright pianos and I just knew how to play since I was a child. Nobody taught me. I sounded like a grown-up and then I learned how to read music. I played so well by ear I could fool the teacher to believe I could play the notes. She'd make the mistake of playing the song once and I could play it.
Very often when I go in to meet for movies or pilots I'm put on videotape. I hate the notion that that tape is going to sit on a shelf and never get better.