I have to have complete silence when I'm writing. I cannot for the life of me work out how anyone can write whilst listening to music or the racket from noisy neighbours, etc, I can't.
When I wrote scripts I had to be in a virtual isolation tank. This may seem a little self-important, but stuff that I wrote when subjected to noise and frequent interruptions was unfailingly (on re-reading it) kack .
Anything I ever wrote that was half good was done in solitude.
Drawing is a different matter. When I was an assistant animator I could work all day, turning out hundreds of drawings whilst listening to music on headphones. That's because assisting is more like production work.
However once I became a Key animator I had to have silence, and most other animators were the same, because the job required planning and preparation (writing, if you like).