To hear an oriole sing

To hear an oriole sing
May be a common thing,
Or only a divine.

It is not of the bird
Who sings the same, unheard,
As unto crowd.

The fashion of the ear
Attireth that it hear
In dun or fair.

So whether it be rune,
Or whether it be none,
Is of within;

The "tune is in the tree,"
The sceptic showeth me;
"No, sir! In thee!"