Where Is The Horse & The Rider?

A song Aragorn recites about Rohan in J.R.R. Tolkien's The Two Towers:

Where now the horse and the rider? where is the horn that was blowing?
Where is the helm and the hauberk and the bright hair flowing?
Where is the hand on the harp-string, and the red fire glowing?
Where is the spring and the harvest and the tall corn growing?
They have passed like rain on the mountain, like a wind in the meadow;
The days have gone down in the West behind the hills into shadow.
Who shall gather the smoke of the dead wood burning?
Or behold the flowing years from the Sea returning?

A section of this song is sung by King Theoden in Peter Jackson's version of the film in an eerie scene which takes place in the king's chamber prior to the Battle of Helm's Deep.

Where is the horse and rider,
Where is the horn that was blowing
They have passed like rain on the mountain
Like wind in the meadow
The days have gone down in the West,
Behind the hills, into Shadow...