Why is it FREE to sing a song in the shower

Because publishers can't find a way to price it - but if they could, they sure as hell would: "So here's the deal: Screw these jokers. They won't listen to reason. They do everything they can to ruin their own business by refusing to change anything and making it difficult for the consumer to do what he or she wants to do."

I keep telling you, it's asteroids and copyright laws that're banging on the front door. And they're gonna get in. Some way they'll make you open that door. As the man says, "screw these jokers".