Impossible.

Earworm.  This has been streaming all day.  Although I first heard it in the Lesley Ann Warren version, the Julie Andrews is, of course, my favorite.

But the world is filled with zanies and fools
Who don't believe in sensible rules
And won't believe what sensible people say
And because these daft and dewey-eyed dopes
Keep building up impossible hopes
Impossible
Things are happening every day