In 2020, Garfunkel read a book called "Hello Darkness, My Old Friend". I looked it up. It's not about him.
It turns out it does involve him: It's by Art Garfunkel's college roommate, who goes blind in Junior year. (I have not read it yet, it's on my list.)
https://www.amazon.com/Hello-Darkness-Old-Friend-Extraordina...