Clanking chains. Creaking door. Spiderweb. Boo. It’s Halloween. This time of year gives us an excuse to do what rock and roll was invented for: worshipping Satan. And that’s what we’re doing on this episode of “Music Raygun.” There’s a visit from the god of hellfire to bring us fire. Lou Reed tears the flesh from off of his own skull. The Beach Boys sing a Charles Manson song. And perhaps the most terrifying thing of all: Simon and Garfunkel. It’s the spookiest podcast of the year.