On a book deadline, I pick 1 or 2 albums and 1 or 2 movies for late-night writing sessions, as I do my best work between 11 p.m. and 4 a.m. Polling the most prolific authors I know, more than 90% do their best work when others are sleeping, whether they start after 10 p.m. or wake up well before 6 a.m.
