Eyes closed seems pretty standard but even better is a little weed. It brings out the detail, smoothness, and enjoyment of the music. It removes all distractions, physically and mentally, and only leaves the music.
Close your eyes and hear the music ?
It seems like music sounds better when I close my eyes. Some people claim that it sounds better with their glasses on. Someone once told me that if someone suggested that music sounded better in the nude that a large group of audiophiles would swear to it! What makes music better for you ?