As she wept and heard unconsciously the nightingales, she grew conscious of another song that mingled with theirs. It was a human voice, clear and sweet as an angel's, and it sang a melody she knew in little snatches that seemed to begin and end in a sigh. The voice came nearer and paused beneath a fig tree, and the words grew distinct. "Pieta, signore, di me dolente," it sang. Silvia leaned out of the window and looked down at the singer. His face was lifted to the white moonlight, and seemed in its pallid beauty a concentration of the moonlight. Only his face was visible, for the shadow of the tree hid all his figure. One might almost have expected to catch a glimmer of two motionless wings bearing up that face, so fair it was. To Silvia it was as if another self, who grieved also, but who could speak, were uttering all her pain, and lightening it so. She recognized Claudio's voice. He was the chief singer in the cathedral, and sang like an angel. She was afraid that Claudio had done very wrong in not being a priest, but, for all that, she had often found her devotion increased by his singing. The Christmas night would not have been half so joyful lacking his _Adeste Fideles_; the _Stabat Mater_ sung by him in Holy Week made her tears of religious sorrow burst forth afresh; and when on Easter morning he sang the _Gloria_ it had seemed to her that the heavens were opening. For all that, however, he had been to her not a person, but a voice. That he should come here and express her sorrow made him seem different. For the first time she looked at his face. By daylight it was thin and finely featured, and of a clear darkness like shaded water, through which the faintest tinge of color is visible. In this transfigurating moonlight it became of a luminous whiteness. The song ended, the singer turned his head slightly and looked up at Silvia's window. She did not draw back. There was no recognition of any human sympathy with him, and no slightest consciousness of that airy and silent friendship which had long been weaving itself over the tops of the mountains that separated them. How could she know that Claudio had sung for her, and that it had been the measure of his success to see her head droop or lift as he sang of sorrow and pain or of joy and triumph? The choir had their post over the door; and, besides, she never glanced up even in going out. Therefore she gazed down into his uplifted face with a sweet and sorrowful tranquillity, her soul pure and candid to its uttermost depths. For Claudio, who had sung to express his sympathy for her, but had not dreamed of seeing her, it was as if the dark-blue sky above had opened and an angel had looked out when he saw her face. He could only stretch his clasped hands toward her. The gesture made her weep anew, for it was like human kindness. She hid her face in her handkerchief, and he saw her wipe the tears away again and again.