I would be very sad but at least now have heard so much I think it would stick with me, and already get auditory hallucination sometimes, so might be able to imagine it. If you mean deafness.

If you mean some sort of music blindness, like it’s only music I can’t hear, it never sounds like music and I can’t remember any of it? That seems inhuman, and I am not sure at all whether I would miss it, maybe not - the only analogue I have is sex drive, I run hot most of my life, sex is something I enjoy so much and value that ability to enjoy it but when I was nursing kids, it was gone, entirely gone, I had less than no sex drive and while it caused problems in my relationship, I can’t say I missed it exactly? I didn’t care that I didn’t care about sex and couldn’t feel it. So if I became amusical in that way, maybe I would not care. It’s just hard to imagine, just like right now it’s hard to believe I didn’t care about missing out on the sexual pleasure.