Original Nat King Cole version (http://www.youtube.com/watch?v=I85ApzR43jU)
uses a traditional (ABAB (break) B) theme; I've gone for a more modern
(ABAB (break) ABAB) variant, but try to imagine this sung in Nat's voice...



Smile (Zombie Apocalypse Remix)
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Smile, though the dead are waking
Smile, though the graves are gaping
When even death goes awry, you'll get by...

If you smile, with your shotgun booming
Smile, at the zombies looming
They'll soon be breaking down the doors, for you...

Light up the cleansing pyre
Fight, till they all expire
Although the fear may be ever so near

That's the time you must keep on trying
Smile, when your friends are dying
You'll find that napalm is worthwhile
If you just smile...

(break)

If you smile, though your knees are shaking
Smile, though your chainsaw's breaking
When all your guns have been fired, and you're tired...

If you smile, with your axe a-swinging
Smile, final rest you're bringing
To all that shambling horde that's here, for you...

Smile, though your love's infected
Smile, don't you feel neglected
They'll get you too, by and by, don't deny...

That's the time you must blow your brains out
Smile, there's no other way out
You'll just become what you revile
So you just smile