I submit that the scariest book ever written is Pet Sematary.
Don't watch the movie. (In fact, never watch a movie based on a Stephen King book or novella unless it's called Stand By Me, Shawshank Redemption, or The Green Mile. No, The Mist does not make the cut.)
Just read the book.
If you have kids, read the book during the day.
Maybe even if you don't, read the book during the day.
A song that makes me fall asleep: These Are The Days, Van Morrison
A song from my favorite band: All These Things That I've Done, The Killers (Not sure if they're really my "favorite band," but they're in the rather fluid top 5.)