Humpback hits
'Songs evolve over time, and differ across populations. This slow evolution can be occasionally interrupted by a kind of revolution, in which one population completely adopts the songs of another in a period of just a couple of years or less. “It’s like a new hit song,” Niksic said—a wide and rapid spread of creative content that’s “unparalleled in the animal kingdom, excepting humans.” She went on, “There’s so many similarities between their culture and ours.”
https://www.newyorker.com/science/elements/how-a-marine-biologist-remixed-whalesong