I wondered the same. Could it be considered some kind of racial thing. Only folks 60 years and older would probably even recognize the tune and know anything about it. I'll bet the person that wrote the commercial didn't even know the origin of it. Oh well, the commercial just doesn't seem the same. It is an American song performed by men in Blackface in the 1840s, about a slave rejoicing over his master's death. It has been deleted from the world of ads to give space to Beer, birth-control, credit cards, phone sex hotlines, and many more substantial commercials.