[Barbershop quartet from BioShock Infinite]:
I may not always love you
But long as there are stars above you
You never need to doubt it
I'll make you so sure about it
God only know what I'd be without you
Without you
And if you should ever leave me
The light would still go on, believe me
The world could show nothing to me
What good would living do me?
God only knows what I'd be without you

[Adlibs]