What emotion does the metaphor evoke in this stanza?

The second stanza takes us deeper into the speaker's memory, which he tells us he is fighting against. By using the Word "insidious" to describe the woman's "mastery of song," the speaker suggests an almost adversarial relationship with her. That he is "betrayed" deeper into his memory, emphasizes the resistance he is putting up against the onslaught of the memory. The last two lines of the stanza participate again in image building. Now the speaker presents us with an idyllic picture of his childhood. Like the initial image of the speaker as a child with his mother, this representation is also stock; it conforms to all of the stereotypes of what a middle-class Sunday night with the family would be like in the late-nineteenth century. The image of the piano links the first and second stanza to highlight the relationship between music and memory. Music was the speaker's guide when he was a child, and it remains his guide as an adult.