Are Blackness and Whiteness useful concepts in the study of popular music?

Some people may use black and white to describe the origin of a genre but essentially the birth of rock and roll came from the combination of many different music styles , some that could be considered white and some black. As music evolves, different styles of music combine all the time. 


The main difference in styles of music comes from class not race. Elvis and Eminem were both white yet they produced what many consider to be ‘black’ music. This was predominantly due to their upbringing  and coming from a working class background. A lot of ’black’ music such as the blues and rap essentially comes from suffering.        


In conclusion I believe that  black and white music are not useful terms for describing music as they do not give enough information and do not take account the rest of the world such as Asia