It's no surprise when someone says that they have a favorite chocolate bar, but for kids of the '70s, theirs may not have been able to stand the test of time.

After all, they are the duo called Soul Control who’s behind the smash-hit dance song Chocolate (Choco Choco) which has all but edged out of earshot the local novelty hit Otso-Otso. "It’s a very happy ...