Charles Rosen Quote
Inaudible music may seem an odd notion, even a foolishly Romantic one—although it is partly the Romantic prejudice in favor of sensuous experience that makes it seem odd. Still, there are details of music which cannot be heard but only imagined, and even certain aspects of musical form which cannot be realized in sound even by the imagination.
Ch. 1 : Music and Sound - The Romantic Generation (1995)