I listen to music, but have to be very careful when I do. I tend to have songs that help me get into a mindset for a certain character, but if they have lyrics, I have listen to adjust my mood and then turn them off. I can't listen to music in any language that I can understand while I'm actually writing, because I have a bad habit of listening to the words--I can't really block them out, and then they disrupt the flow of words in my mind. It tends to come as an avalanche that feels almost lyrical, so someone else's lyrics tend to divert the rush and throw off my rhythm, and can change or even ruin the tone of what I'm writing. Most of my music is either orchestral, or in English, Japanese, Cantonese, Mandarin, or Korean. I have to stick to the orchestrals, the Mandarin, and the Korean if I want to get anything done. The rest completely screws me up.