Her father used to talk about them.

O, and what was that her mother used to want?
A "cab'net-organ." Perhaps this was a cab'net-organ.

At any rate, she was entranced with the music.
Up behind the man who sat at the big desk was a large board painted black with some white marks on it.

The sunlight glinted across it, and she could not tell what they were; but, when she moved a little, she saw quite clearly it was a large cross with words underneath it--"He will hide me." It was a strange place.

The girl looked around shyly, and felt submerged in the volume of song that rolled around her, from voices untrained, perhaps, but hearts that knew whereof they sang.