Example of an earworm:
In addition to "Bad Romance," examples of common earworms named in the study include "Don't stop believing," by Journey and, perhaps not surprisingly, "Can't get you out of my head," by Kylie Minogue.
Example of a place (Outdoors):
Airplanes
Wind
Birds
Reasons for how a booming economy would help with the development of a new genre:
The growing middle class has lead to new markets, supported economic growth and has built stronger communities. Just like how rock and roll has brought people together, has helped develop new genres of music and has made tremendous strides in changing the music scene for the better.