She forgot the others.

She was singing for him, and he was compelling her to her best.

She was conscious of a subtle sense of mastery overpowering her, and with a strange delight she yielded herself to that commanding influence; but as she sang she began to realize that he was thinking not of her, but of her song, and soon she, too, was thinking of it.

She knew that his eyes were filled with the vision of "The Man of Sorrows" of whom she sang, and before she was aware, the pathos of that lonely and despised life, set forth in the noble words of the ancient prophet, was pouring forth in the great Master's music.
When the song was ended, no one spoke for a time, and even Mr.Sims was silent.

Then the lieutenant came over to the harmonium, and leaning toward Kate, said, in an earnest voice, unusual with him, "Thank you Miss Raymond.