White Christmas is part of the general cultural ambience of things which are just there. You don't have to out of your way to find such things - on the contrary, the difficulty is in avoiding them! I dare say on that level there are hundreds of Irving Berlin songs that I know, but do not know it. Did I know White Christmas was a Berlin song? I don't think I did. The instances I mentioned (there are bound to be several more) DO mean something to me and those meanings are quite specific. These things you have to dig a little deeper to find. I can't remember ever seeing The Cocoanuts on (UK) TV - and no matter how 'straight' Sun Ra could get, he never quite found the popularist appeal he was undoubtedly looking for at various times in his long & varied career.

White Christmas is a good example of the absence of any overt Jewishness in Berlin's work. On the contrary - it celebrates Whiteness on more than the one level (especially in the context of this thread) and is, in any case, quite forgettable as a piece of mind-numbing middle-American mawkish schmaltz.