To strike the right note,

subtle undertones, to tone something down: It's with good reason that colloquial language borrowed expressions from the realm of sound. Because of all forms of human communication sounds have a very subtle as well as intimate character. Writing addresses reason, pictures stimulate fantasy, but the sound touches our emotions. Thus the professional treatment of sound demands a certain measure of sensitivity.
And beyond all indispensable technology it takes only two things: true commitment and pure passion…