Gabriela Lena Frank says that she can tell, from her own experience, some of what the composer was doing as he lost more and more of his hearing. “More pitch distance and difference, and more vibration and resonance, create a recipe for happiness for a hearing-impaired person, trust me. A more dissonant and thick language, with clashing frequencies, also causes more vibration, so the language does get more physically visceral that way, too.” – The New York Times