Sometimes I listen to music, other times I don't. I have tendensies to concentration deficits (was tested for ADHD but they didn't find enough for me to get the diagnosis, but there's definitely traits), so sometimes I need the extra input, because otherwise I'll just sit and zone out, and be less productive. And I know I become more productive with music, because I heard of this in school, and tried to study without. I got nothing done. At all. But as soon as music plays, I can work.
I often just have the same number on repeat. I find that less distracting, and it keeps me focused. But then sometimes I can't concentrace at all with music, and then I turn it off. It really depends on the day, but in the majority of days I need it.
Funny he should mention animation, because when I was animating in a course, then yes, I couldn't concentrate with music. I needed to focus on the movement of the character a lot.