The campaign began with a television commercial featuring a gorilla playing drums to an
iconic Phil Collins song. The bizarre juxtaposition was an immediate hit. The concept so
engaged consumers that they were willing to go online, view the commercial, and create
amateur versions of their own, triggering a torrent of YouTube imitations. Within three
months of the advertisement’s appearance, the video had been viewed more than six
million times online, year-on-year sales of Cadbury’s Dairy Milk chocolate had increased
by more than 9 percent, and the brand’s positive perception among consumers had
improved by about 20 percent.