If you cann't find a parts place, you could try looking at some of the cheaper Casios...to see if the keys might be interchangeable. You may even be able to find a used one at a 'GoodWill or Salvation Army' type store. Or the 'used toy' type store. You could also swap out a higher/lower key (less used) for the broken one. I hope you can find a fix. If not...check out the Casio wk 3000/3500's, you may decide to go for a new one...and use the 1200 for parts