@d1d4c Higher B is happier than Lower C, because higher pitch is happier than lower pitch, circle is happier than square, because circle has no corners, and corners associate with aggression and spikes, but what resonance harmonics of EACH individual instrument, not just a class, has to do with master pitch? I purposely asking, because I have a music production and post production degree, so i' interested what do you mean by that :)