Yeah, darkness is a great "tweak". I like to listen with one tiny light or no light. It is funny how much better the sound is then than when the sun is out, and its funny how dreamy it can get. Less noise and more calm, I think.
I close my eyes
when I listen to my music most of the time. i don't know why it makes everything sound better, but it does. i open my eyes after a track, and feel like i've just woken up from some "state" of being. do you know what i'm talking about?... the eyes closed thing?