On the left is the One of Us/Should I Laugh or Cry Single. On the right is The Visitors album cover. Can you see what's different? (The quality and the title do not matter.)
The difference is that Bjorn and Benny switched places while Frida and Agnetha stayed in the exact same positions. How? I'm really fidgety and I would be in different positions on each and every picture. :P I'm not as still as my ABBA dolls....
