Depends on the mood/intent. Sometimes I just need to ink through a fat batch of sketches fast. Then I put on some japanese hardcore or some nightcore and get dat shit done fast as fuuuuuuuuuu
When it's not like that, I go for something I can sing along to or be inspired by. Mostly goth rock and stuff like that. Too bad it's all so sad, Aurelio Voltaire is the only happy goth musician I can think of 
I like this sex bomb especially
music isn't all i listen while drawing tho. I draw like 6-12 hours a day, depending, so when I ink, color and tone I often find myself listening to other stuff. I love binging Gordon Ramsay shows haha. Angry screaming chefs make my ears go "oh hey my second home is calling!"
Once you work in a restaurant, part of you stays in the big restaurant family forever. Even when you stop talking to the people you worked with.
When I see the people I worked with now on town we still call each other "brother".