Piano: How do I know which key to press?

So I am not quite sure how to explain this but since there are several C keys, several D keys, several E keys and so on, how do I know which one I should press. Like I'm just now looking at the 'Fur Elise' and I have E D# E D# E B D C A but I don't know which ones I should press. Do I press the E... show more So I am not quite sure how to explain this but since there are several C keys, several D keys, several E keys and so on, how do I know which one I should press. Like I'm just now looking at the 'Fur Elise' and I have E D# E D# E B D C A but I don't know which ones I should press. Do I press the E that's on the same place where middle C is, or any of the rest of the E keys?
5 answers 5