This is sweet — a lullaby for atheist parents, from Vastleft and Kevin Hammer.
Sadly, the baby makes it through the end of the song in one piece:
Go to sleep,
There is no god.
Life is complex,
But your daddy always loves you.
No sky monster lords above you.
Sleep, my darling;
In dreams we fly.
When you wake: a new adventure.
And ‘tween us, there’ll be no lies.
(Thanks to Raven for the link!)