The Phantom of New Orleans - The Phantom Romance Series, #3

After earning her place in the grand world of opera, Christine Daaé is forced to retire. The loss of her voice is devastating to her, but only now does she feel strong enough to face her past. An unexpected duty sends her on a journey to find her former teacher, but danger is soon to follow. Erik Jeunet is a changed man. He is a respected teacher in New Orleans, mentors street musicians who never take his advice, has friends who care for him, and of all things, a fiancée.
When Christine Daaé comes back into his life, it upends the fragile confidence he's gained and throws his world into unwelcome disarray. They both know the scars of the past will never fully heal, but old feelings do not fade. As they become entangled in a mystery the connection they once forged in the dark is renewed. Will they have the courage to let go of the past, and let love in this time?