> For the complete documentation index, see [llms.txt](https://qiiingc.gitbook.io/fopp3/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://qiiingc.gitbook.io/fopp3/chap2/67.mozarts-formula-beethoven-and-group-theory.md).

# 67.Mozart's Formula, Beethoven and Group Theory

<http://bbs.popiano.org/forum.php?mod=viewthread&tid=222082&highlight=%BB%F9%B4%A1%B8%D6%C7%D9%C1%B7%CF%B0%B7%A8>