To be very controversial, I would say Marsalis is the 'Literate White Persons' window to the Jazz world.
So I think the author is reaching to that audience, and by 'authenticating' the connection between Marsalis and the new artist, verifying the OKness of said new artist to the "Literate White Community".
So I think the author is reaching to that audience, and by 'authenticating' the connection between Marsalis and the new artist, verifying the OKness of said new artist to the "Literate White Community".

