Field museum: Two sides

Genghis Khan had two very different sides, so DDB Chicago created a radio spot with 2 very different sides, people could turn the balance on their stereos to the left to hear about 'Khan the barbarian' or turn the balance to the right, to hear about 'Khan the innovator' and for those that didn’t adjust the balance, they heard both sides at the same time, and were able to digest it, as we only made a few words different in each sentence.