How does Verdi use repeated musical phrases to connect Alfredo and Violetta in La traviata?

In La traviata, Giuseppe Verdi employs repeated musical phrases to unify the drama and underscore the emotional connection between the protagonists, Violetta and Alfredo.

A primary example of this technique is the melody associated with Alfredo’s declaration of love. When Violetta is alone in Act I, she sings the aria "Ah, fors’è lui," which echoes the musical theme of Alfredo’s earlier profession of love. By weaving this melody into her own internal reflection, Verdi transforms the phrase into a recurring love theme that signifies the awakening of Violetta's feelings for Alfredo.1

This approach reflects Verdi’s broader tendency to use music to bridge the gap between characters and underscore their shared experiences. Rather than relying solely on the formal structure of recitative and aria, he utilized these thematic echoes to create musical continuity, effectively grounding the audience in the psychological development of the characters as their relationship evolves.1