It was suddenly obvious to everybody in the studio that something quite special must be going on inside the man, because something quite special was coming out. He was singing now, cold or no cold, with power and warmth, he was letting himself go, the public arrogance was gone, the private side was in this song about the girl who, it is said, understands him better than anybody else, and is the only person in front of whom he can be unashamedly himself.

"Frank Sinatra Has a Cold" (Esquire, April 1966)