Much to the chagrin of cultural nationalists in places such as France, no culture seems immune to the seductive rhythms of American pop and rock. Fed by a steady diet of American TV and movies, young musicians from places as disparate as Zimbabwe, Paraguay, New Zealand, Mynamar and Egypt have learned to combine their indigenous folk music with U.S.-born-and-bred rock — making for a kind of transglobal, world-beat music with a heavy blues and R&B influence.