What was the effect of the song ' two lovely black eyes' on the narrator and Harris?

The song not only made them sad...... it made them weep.

I had always regarded “Two Lovely Black Eyes” as rather a commonplace tune until that evening. The rich vein of sadness that George extracted from it quite surprised me.

The desire that grew upon Harris and myself, as the mournful strains progressed, was to fall upon each other’s necks and weep; but by great effort we kept back the rising tears, and listened to the wild yearnful melody in silence.