«Musical ideas or feelings are not mere sound, and yet are nothing apart from sound; they may be described in emotive language ("sad" and the like) and yet are never adequately so described. Description - a logical interpretant, dependent on collateral observation by which the feelings heard are compared with human emotions conventionally designated - lacks the specificity, complexity, and nuance of the musical ideas described. As Mendelssohn said, "It is not that music is too vague for words; it is too precise for words." That is why the proper or complete interpretant of music is emotional, not logical. But that emotional interpretant is not one’s ordinary feeling, for example, of sadness; it is the same complex of feeling as that embodied in the piece of music heard. » (Short : Peirce theory of signs 2007: 204).
Susanne Langer (1953: 147). "The first principle in musical hearing is not, as many people assume, the ability to distinguish the separate elements in a composition and recognize its devices, but to experience the primary illusion [i.e., the movement of the music through the 'virtual time' constructed by the work] , to feel the consistent movement and recognize at once the commanding form which makes this piece an inviolable whole"