Rock, jazz, blues and pop are American genres that should be performed by American citizens, in places such as Atlanta

Wrong, WAV. Rock, jazz, blues & pop are universal musical phenomenon initially derived from the African & European cultural melting pot that is North America and historically, culturally & ethnically unbounded thereafter. This is not a matter of opinion, but a matter of observable & quantifiable FACT which you'd only be too aware of were you not so bound up with your suspect & woefully ill-informed right-wing racist agendas.