......From that hour, at least, began the siege of Mrs. Henry; a thing so deftly carried on that I scarce know if she was aware of it herself, and that her husband must look on in silence. The first parallel was opened (as was made to appear) by accident. The talk fell, as it did often, on the exiles in France; so it glided to the matter of their songs.   
"There is one," says the Master, "if you are curious in these matters, that has always seemed to me very moving. The poetry is harsh; and yet, perhaps because of my situation, it has always found the way to my heart. It is supposed to be sung, I should tell you, by an exile's sweetheart; and represents perhaps, not so much the truth of what she is thinking, as the truth of what he hopes of her, poor soul! in these far lands." And here the Master sighed, "I protest it is a pathetic sight when a score of rough Irish, all common sentinels, get to this song; and you may see, by their falling tears, how it strikes home to them. It goes thus, father," says he, very adroitly taking my lord for his listener, "and if I cannot get to the end of it, you must think it is a common case with us exiles." And thereupon he struck up the same air as I had heard the Colonel whistle; but now to words, rustic indeed, yet most pathetically setting forth a poor girl's aspirations for an exiled lover; of which one verse indeed (or something like it) still sticks by me:—         O, I will dye my petticoat red,
With my dear boy I'll beg my bread,
Though all my friends should wish me dead,
For Willie among the rushes, O!

He sang it well, even as a song; but he did better yet a performer. I have heard famous actors, when there was not a dry eye in the Edinburgh theatre; a great wonder to behold; but no more wonderful than how the Master played upon that little ballad, and on those who heard him, like an instrument, and seemed now upon the point of failing, and now to conquer his distress, so that words and music seemed to pour out of his own heart and his own past, and to be aimed directly at Mrs. Henry.
Jim McLean