Ok, even in the midst of the turmoil over cards, an unhappy miner can have a fun moment. I received this badge today even though I don't have the rare music box. Apparently, it is fixed now. So go out and play for those crabs!
It wasn't broken, just for a long time no one played an SB-1 to the crabs, but since a few months ago SB-1 owners have been making rounds with the crabs daily and thus more people have gotten the badge with other musicblocks.