"Sweep thy faint strings, Musician,
With thy long lean hand;
Downward the starry tapers burn,
Sinks soft the waning sand;
The old hound whimpers couched in sleep,
The embers smoulder low;
Across the walls the shadows
Come, and go.

Sweep softly thy strings, Musician,
The minutes mount to hours;
Frost on the windless casement weaves
A labyrinth of flowers;
Ghosts linger in the darkening air,
Hearken at the open door;
Music hath called them, dreaming,
Home once more."

Walter de la Mare

http://www.poemhunter.com/poem/the-song-of-shadows/