Electrochem beat me to it. I was going to put up a youtube of that by a Ukrainian children's choir in Sweden.
It's called "Shchedryk" which means "bountiful".
The English version is known as "The Little Swallow". It's a traditional children's story often told at Christmas.
I usually find I have something in my eye whenever I hear it.
Even though I have no children, I do admit to being a right softie.
Actually.... somewhere on a spectrum between sensitive soul.......
........... and Sap of the Month.
But I don't care ;o)
Merry Christmas all.