I want to read up on music theory, as it can only help with playing guitar, for example. Does it boil down to harmonics created when the waves line up? I think of the example of nodal lines, when I took a physics class in high school. An illustration is when you drive by crops, where plants are placed at specific intervals and you see lines appear at certain angles as you drive by- some strong and some weaker. Is it the same thing with harmonics?
