Wanderer, I almost always write to music, usually non-vocal jazz, but it depends on what kind of scene it is. For instance, I love writing action scenes to music from The Matrix film series. I used to write in silence way back when I was in high school/college. Those days are long gone...ha ha ha.
As for being "odd", I don't seem to follow any of the writing processes of my fellow writing group members. Whatever works works...smile.