Art for a Layperson

I went to a western classical music concert yesterday (the showpiece being Tchaikovsky's 6th Symphony). I have zero knowledge of classical music; in fact, I have zero knowledge about any form of music. Couldn't even tell which sound emanates from which instrument. Nonetheless, I enjoyed the performances by the 75-80 person strong orchestra, further reinforcing my view that good art can be appreciated even by the uninitiated (knowledge can enhance the appreciation, of course).