'O Edrehi, forbear to-night 
Your ghostly legends of affright, 
And let the Talmud rest in peace; 
Spare us your dismal tales of death 
That almost take away one's breath; 
So doing, may your tribe increase.' 
 
Thus the Sicilian said; then went 
And on the spinet's rattling keys 
Played Marianina, like a breeze 
From Naples and the Southern seas, 
That brings us the delicious scent 
Of citron and of orange trees, 
And memories of soft days of ease 
At Capri and Amalfi spent. 
 
'Not so,' the eager Poet said; 
'At least, not so before I tell 
The story of my Azrael, 
An angel mortal as ourselves, 
Which in an ancient tome I found 
Upon a convent's dusty shelves, 
Chained with an iron chain, and bound 
In parchment, and with clasps of brass, 
Lest from its prison, some dark day, 
It might be stolen or steal away, 
While the good friars were singing mass. 
 
'It is a tale of Charlemagne, 
When like a thunder-cloud, that lowers 
And sweeps from mountain-crest to coast, 
With lightning flaming through its showers, 
He swept across the Lombard plain, 
Beleaguering with his warlike train 
Pavia, the country's pride and boast, 
The City of the Hundred Towers.' 
 
Thus heralded the tale began, 
And thus in sober measure ran.
Henry Wadsworth Longfellow
http://www.poemhunter.com/poem/tales-of-a-wayside-inn-part-3-interlude-i/