I do research first before I write a volume, usually focusing on what I want show for that certain part of the story. Once I gathered up enough information, I blend it with my way of storytelling for a smooth flow of writing and narrative.
Usually, once I got myself on a roll, I can do a chapter of around 4k words. Or if I'm on it, I'd go 10k-12k. Helps especially if you're rushing to the 'best part' of your work.
As for getting myself starting to write for the day, I'd usually reread my previous chapter, do some edits, then proceed straight to what I want to write.
Or I'd write down the draft in a notebook first before typing on PC. The thing that I hate when I write in notebooks is that, I tend to go past my 4k limit, which kind of upsets the flow of narrative that I want, as I need to trim my word count.
Now for keeping myself writing, it's either I'd listen to music, or eat while writing. But it's usually the former. I write until I feel that I had enough for the day.
Staying away from my games and shows also help in getting my volumes done before my own deadline.
Tldr: yes, listening to music while writing is normal.