I've heard this Christmas song on the radio a few times, but I can never catch who sings it or exactly what it's called. I think it's called "Christmas Shoes" or something. The chorus goes something like:

Sir, I want to buy these shoes
For my Mama, please.
It's Christmas Eve and these shoes are just her size.
Could you hurry, Sir?
Daddy says there's not much time.
She's been sick for quite awhile
And I know these shoes will make her smile.
I want her to look beautiful
If Mama meets Jesus tonight.

'The Christmas Shoes' by Newsong