Well said, Paul. Remember something about work in general. 500 years ago, the highest respect was given to expert bloodletters, calligraphers, and bricklayers. These trades exist today only as menial labor for a small minority of workers. In the same way, music copying, arranging, transposing, and accompanying have become marginal trades.
Songs are simple, written by musical illiterates.
The song is inimitable. It has highly complex arrangement, a distinctive sound, and a high level of craftmanship. Yet, it was written by a musical illiterate. A guy whose tape recording is his score. I'll alternate between Beatles and Mendelssohn on my Walkman.