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I would be so impressed if you were asking this question because you were curious about the accessibility of music during the Classical era, but this sounds like a homework assignment. Most of us that answer questions on Yahoo Answers believe that students learn more from doing their own homework assignment. The only thing that they learn if we answer the question is that someone else will do their homework assignment for them and all they need to do is cut and paste.

With the internet at your finger tips, you can research this topic in a matter of seconds.

Hint: compare "music that you can play for yourself" with "music that has to be played by a professional orchestra".