I'm one of those annoying ADHD people who will hear everything you're saying, ask "What?," and then a second later I've finished processing the audio in my head and am ready to continue the conversation. Similarly, I can't readily differentiate voices from melody in songs. Far too many songs don't have strong enough vocal tracks and the songs might as well just be mud to me. I suppose it's why I gravitated towards rap and R&B growing up.