What is the fine-grained topic of the following text: Man, I used to be interested in getting diagrams and stuff to know all the harmonics, then I realized I knew them all and what's more, there are so many, and there are so many ways to hit them all, that more than half the fun is figuring ou tnew ways to hit a harmonic, granted some ways of hitting harmonics are unorthodox and don't sound out quite as clear as more orthodox methods, its still fun to experiment. Only return the topic.
Exploring and experimenting with musical harmonics