i didn't go into music as a career because I don't like
  performing in public - even at home, when I'm doing one of my
  marathon piano playing sessions, I do it with doors shut. I
  don't mind if people are listening, but I don't want to be
  watched when I'm doing it. And no, picturing people in
  underwear, while loads and loads of fun, doesn't work for
  singing, public speaking or any of that - not for me either. I
  did my share of it as a kid - lots of plays, singing, playing,
  performing etc - but as an adult, i think i'd need some
  anti-anxiety pills to get through it :) "