" To be sure, rock n' roll is usually a flagrant commercialization of rhythm & blues, but the music in many cases depends on materials that are so alien to the general middle-class, middle-brow American culture as to remain interesting. Many of the same kinds of cheap American dilutions that had disfigured popular swing have tended to disfigure the new music, but the source, the exciting and "vulgar" urban blues of the forties, is still sufficiently removed from the mainstream to be vital. For this reason, rock n' roll has not become as emotionally meaningless as commercial swing. It is sill raw enough to stand the dilution and in some cases, to even be made attractive by the very fact of its commercialization. Even its "alienation" remains conspicuous; it is often used to characterize white adolescents as "youthful offenders." (Rock n' roll also is popular with another "underprivileged" minority, e.g., Puerto Rican youths. There are now even quite popular rock n' roll songs, at least around New York, that have some of the lyrics in Spanish.) Rock n' roll is the blues form of the classes of Americans who lack the "sophistication" to be middle brows, or are too naïve to get in on the mainstream American taste; those who think that somehow Melachrino, Kostelanetz, etc., are too lifeless "

― Amiri Baraka , Blues People: Negro Music in White America