Keep On Galloping Lyrics

Lyric discussion by Shinsen 

Cover art for Keep On Galloping lyrics by Korpiklaani

This is a great song--most of Korpiklaani's meanings are literal, when translated. But why does it say

Here's the stable of my horse, Here was born my silver haired mount

when the English chorus says it's a black horse?

On the vinyl release of Keep on Galloping the art depicts the horse as black with a silver mane and tail.