Arthur Conan Doyle,
The Valley of Fear — Part II, Chapter 3…
(1915)
“ Strange indeed is human nature. Here were these men, to whom murder was familiar, who again and again had struck down the father of the family, some man against whom they had no personal feeling, without one thought of compunction or of compassion for his weeping wife or helpless children, and yet the tender or pathetic in music could move them to tears. McMurdo had a fine tenor voice, and if he had failed to gain the good will of the lodge before, it could no longer have been withheld after he had thrilled them with "I'm Sitting on the Stile, Mary," and "On the Banks of Allan Water." ”
