This is a funny little error from Amazon's Super Hits page: 
The backend software that displays the artists' names must've seen a comma and figured it was stored as Last Name, First Name, so it computed

Blood, Sweat & Tears → Sweat & Tears Blood
Earth, Wind & Fire → Wind & Fire Earth

This is why computers will never run the world:  They're only as smart as we tell them to be, and we're fairly dumb. #technology