Compare & Contrast

Here's another old song by Led Zeppelin, from their 4th (1971) LP called "The Battle of Evermore":

The Queen of Light took her Bow and then she turned to go
The Prince of Peace embraced the Gloom and walked the Night alone
Oh, dance in the dark of Night, sing to the morning Light
The Dark Lord rides in force tonight, and Time will tell us all
Oh, throw down your Plow and Hoe, rest not to lock your Home
Side by side we await the Might, of the darkest of them All 

I hear the horses' Thunder down in the Valley below
I'm waiting for the Angels of Avalon, waiting for the eastern Glow
The Apples of the Valley hold the Seeds of Happiness
The Ground is rich from tender Care, repay do not forget, no, no
Dance in the dark of Night, sing to the morning Light
The Apples turn to brown and black, the Tyrant's Face is red
Oh, War is the common Cry, pick up your Swords and fly
The Sky is filled with good and bad, Mortals never know 

Oh well, the Night is long, the Beads of Time pass slow
Tired Eyes on the Sunrise, waiting for the eastern Glow
The Pain of War cannot exceed the Woe of Aftermath
The Drums will shake the castle Wall, the Ring Wraiths ride in black (ride on)
Sing as you raise your Bow, (ride on) shoot straighter than before
No Comfort has the Fire at Night that lights the Face so cold
Oh, dance in the dark of Night, sing to the morning Light
The magic Runes are writ in Gold to bring the Balance back, bring it back...

At last the Sun is shining, the Clouds of blue roll by
With Flames from the Dragon of Darkness, the Sunlight blinds his Eyes

Oh, bring it back, bring it back, bring it back, bring it back, bring it back...

The story reminds me of the older (1940) animation sequence created by Walt Disney and set to music in his masterpiece, Fantasia:

Of course the original story is much older than either work of art.