'That was not your way of opening mine, dear!' laughed Ortensia. 'I am afraid you needed no secret at all to do that.'

Again he touched the mandoline, but it was not mere tinkling music now, making believe that it came all the way down the long street from the dismal Tor di Nona by the bridge. It was that love-song he had made for her in Venice, and had sung to her when Pina left them together the first time; a measure of the melody trembled through the upper strings, and then his own voice took up the words in tones breathed out so easily that the highest never seemed to be high, nor to cost him more effort than ordinary speech. Of all instruments the violoncello can yield notes most like such a voice, when the bow is in a master's hand.

In Rome, at night, he may sing who will, even now: if he goes bawling out of tune through the silent streets, though it be not from drink but out of sheer lightness of heart, the first policeman he meets will silence him, it is true; but if he sings well and soberly he may go on his way rejoicing, for no watchman will hinder him. It is an ancient right of the Italian people to sing when and where they please, by day or night, in the certainty that tuneful singing can never give offence nor disturb even a dying man.

So the great master of song sat in the high balcony on that June night and let his voice float out over moon-lit Rome; and presently Ortensia slipped from her chair and knelt before him, her hands clasped on his knees and looking up to his face, for his magic was more enthralling now than when it had first drawn her to him.

When he reached the end he kissed her, the last long-drawn note still vibrating on his lips, and she felt that they were cold and trembling when they touched hers.

'Yes,' she whispered, drawing back just enough to see his eyes in the moonlight, 'that was the key to my window. When I heard that song I knew you loved me already, and that I must love you too, sooner or later, and for all my life. It is not my poor beauty that is rarer than pearls and rubies, love, but your genius and your voice. I know what you mean now! I like to be envied by other women because you are mine, with all you are, you, and your fame, and everything!'

'Do you see?' Stradella laughed softly. 'You should not be angry with people who stare at you, any more than I am with people who listen when I sing! And I am no more jealous because Don Alberto admires you than you should be because Queen Christina likes my singing, as she says she does.'

'Tell me, Alessandro, is that a black wig she wears, or is it her own hair?' asked Ortensia, pretending to be serious.

'In confidence, my love, it is a wig,' Stradella answered with extreme gravity.

'So much the better. I am glad she admires your singing; but if it were not a wig, perhaps I should be less glad. Do you think Don Alberto's fine black hair is his own, dear; and are his legs quite real?'