This is proof that Alison Mosshart and Baby Ruthless are two different people. Alison has covered the granddad-beloved smarm-fest What a Wonderful World. If Baby Ruthless had a solo single I'm sure it would be called something like I Claw My Way Into Your Frozen Grave And Consume Your Soul (Baby).
It's quite nice, isn't it?
Although, I guess, it was for the TV show Sons of Anarchy, which I bet isn't a reality show about people who rescue baby rabbits or anything.