The singer-songwriter has always straddled between the worlds of globalization and the traditions of her homeland.

The Beatles degree dives into the band's shifting perceptions over more than half a century, and how it's affected other sectors such as tourism. Holly Tessler, the professor who founded the program, joined The World's host Marco Werman to explain more about what the degree entails.

At the age of 16, Valera started to salvage radio and TV parts out of discarded electronics to build his own shortwave receiver and transmitter, connecting him to a wider world of musical trends.