Dagny’s train ride and sudden clarity link the power of creation to beauty, competence, and mystery. The melody brings vitality, suggesting that great art still stirs the soul—yet even that spark is veiled in secrecy. Meanwhile, the brakeman’s knowledge of a nonexistent concerto suggests that Halley has, in fact, written more music. However, the reason Dagny has not heard it will not become apparent until much later in the novel.