I read an section in CC Chang's Book, Fundamentals of Piano Practice. It says Beethoven used group theory type concepts to write his famous Fifth Symphony (first movement). I find it interesting and I want to look more into this and draw my own conclusions. I searched on the internet today, and found no sites to support this idea. (There is even one file I looked at that said there is no mathematical pattern to the music.) I tried then, to look for a detailed structural analysis. There was none. (I know it's a great piece of music and it's in sonata form, thank you.) Short of getting the score sheets and analyzing it yourself measure by measure (please, don't go that far for me), can someone here please help me?