If we compel the composer to write in terms of what the listener is able to hear, we flirt with the danger of freezing the evolution of musical language, whose progressive development comes about through transgressions of a given era's perceptual habits."
The border between music and noise is always culturally defined—which implies that, even within a single society, this border does not always pass through the same place; in short, there is rarely a consensus.... By all accounts there is no single and intercultural universal concept defining what music might be
