Sentence:  The girl for whom he was beginning to nourish an extraordinary tenderness was at this time <WSD>ensphered</WSD> by the same harmonies [those of the church choir and organ] as those which floated into his ears; and the thought was a delight to him. 
Meaning of the word marked with <WSD> tags:  To place in a sphere; to surround in all directions (as if) by a sphere (one of the concentric hollow transparent globes formerly believed to rotate around the Earth).