A music/lyrics trope. Subtrope of Playing to The Fetishes and related to Fetish Fuel. Eventually, an alternative music band (although sometimes even a relatively mainstream music band) whose lyrics usually do not deal with fetishistic and/or sadomasochistic sex, will at some point write a song that (almost entirely) deals with fetishistic and/or sadomasochistic sex. It could be because they are actually kinky in real life, or it could merely be an attempt at sounding Darker and Edgier. Frequently invoked by Industrial bands, but many other genres do it too.