@glitterbag,
Boone's entire career was founded on 'whitening' black sounds. Covering R&B hits and then outcharting them.
I remember a story about him covering Fats Domino's "Ain't That A Shame" and having a hissy fit because he wanted to sing "Isn't That A Shame".
But on Dylan covering Sinatra - possibly it's an ironic post mortem put down of the guy who was very anti-rock'n'roll early on (because it wound up the teenage girls even more than he had in the early 40s).
"Rock 'n Roll: The most brutal, ugly, desperate, vicious form of expression it has been my misfortune to hear."
"Rock 'n' roll smells phony and false. It is sung, played and written, for the most part, by cretinous goons. And, by means of its almost imbecilic reiteration, and sly, lewd and in plain fact, dirty lyrics ... it manages to be the martial music of every side-burned delinquent on the face of the earth."