While building I don't bother with music. As much as I like music in general we tend to get it all over the place. Shopping centre, restaurants and shops. So when I am concentrating on creating I don't have it on as I find it a distraction when in the middle of something challenging.
When I work on Trainz I prefer to listen some rock or heavy metal music stuff.
@Antwerp: Alice Cooper is one of my favourite musician too, I like his stuff from the very first beginning until the last album "Welcome 2 my nightmare"