Comment by LukeB42

Both of these things. The timbres can be explained through evolutionary biology. The same brain centers used for processing movement in 3d space also start firing up to start predicting where any given piece of music will go.

An interesting note has a fundamental and harmonics and allows analogies to be drawn in RF engineering and quantum mechanics: https://www.google.com/search?q=any+good+parallels+between+i...