There was once a time, a very simple time, when you could start a new wave band with your art-school friends, record a few demos, play fewer than a dozen shows, and suddenly you’re on tour with Depeche Mode . Book of Love strutted into their brief moment of fame with the same laid-back attitude that colors their music. They were so naturally cool, so unabashedly themselves, that their brief moment as mid-1980s club superstars seemed like a happy accident. In an era when modern, up-and-coming bands had to dress louder, sound louder, and act louder than their peers to even have a chance at fame, Book of Love calmly asked, “Can’t it all be so simple?” Their strategy of success via simplicity was impressive for many reasons, but mostly because the quartet had a ton to be loud about.…