ALGERNON: Did you hear what I was playing, Lane?It's a strawman that deserves to be ignored. Lesser performers (and I am certainly among them) have to concentrate on the technical aspects of playing and performing, because the first responsibility of any performer is to execute the notes that are written on the page. If you can't play the right notes, in tune, with the proper rhythm, and at a coherent tempo, there's little point to looking past the notes to find "heart and emotion", because the audience isn't going to notice - they're going to hear only the technical flaws.
LANE: I didn't think it polite to listen, sir.
ALGERNON: I'm sorry for that, for your sake. I don't play accurately-any one can play accurately-but I play with wonderful expression.
--Oscar Wilde, The Importance of Being Earnest