Music, in even the most terrible situations, must never offend the ear but always remain a source of pleasure.
Nevertheless the passions, whether violent or not, should never be so expressed as to reach the point of causing disgust; and music, even in situations of the greatest horror, should never be painful to the ear but should flatter and charm it, and thereby always remain music.
You know that I become quite powerless whenever I am obliged to write for an instrument which I cannot bear.
To my eyes and ears the organ will ever be the King of Instruments.
Music must never offend the ear, but must please the listener, or, in other words, must never cease to be music.