La "camera obscura" come metafora dell'orecchio e della mente. A proposito della forma e della teoria musicali nel XIX secolo
Résumé
In this article, the "camera obscura" is considered as a metamorphor of the ear and the spirit through three aspects: the contrast which characterize Schumann's music and which correspond musically to the technique of claire-obscure; the relationship between the vibrations of sound and the inner ear by Helmholtz and the link between concreteness and conceptualization by Schumann and Riemann. The couple concreteness-conceptualization occurs in the relationship between on the one hand Riemannian theory and performance practice, on the other hand the esoteric and exoteric moments of musical form by Schumann among others