tipo un indovinello..

Our history books refer to it

In cryptic little notes,

It's quite a common topic on
The Transatlantic boats;
I've found the subject mentioned in
Accounts of suicides,
And even seen it scribbled on
The backs of railway-guides.

Does it howl like a hungry Alsatian,
Or boom like a military band?
Could one give a first-rate imitation
On a saw or a Steinway Grand?
Is its singing at parties a riot?
Does it only like Classical stuff?
Will it stop when one wants to be quiet?