The world didn't end with a bang or a whimper; for Elias Thorne, it ended with a C-sharp.

"I can't do it," she whispered. "The music is there, but I'm not."

She moved into 4B with a chipped guitar case and a laugh that sounded like wind chimes. Clara was twenty-two, a runaway from a prestigious conservatory, possessing talent that was raw, jagged, and terrifying. She played in the subway tunnels, coming home late with fingers red from the cold and pockets full of sticky nickels.

The climax of their 8.2-rated drama came on a Tuesday. Clara had landed an audition for the very symphony Elias once led. But her nerves were a wreck. She sat in the hallway outside his door, her back against the wood.

One evening, through the thin, peeling walls, Elias heard her trying to compose. She was stuck. She kept hitting a flat note where the melody needed to soar. It was a physical ache in his chest. Without thinking, Elias grabbed a heavy book and thacked it against the wall twice— Stay on the dominant seventh, he thought.

Ten years ago, Elias was the premier cellist of his generation. But a degenerative neurological condition had turned his hands into trembling strangers. Now, he lived in a rent-controlled apartment in a city that had forgotten his name, surrounded by stacks of yellowed sheet music and a cello case he hadn’t opened in three years.

Clara stood up, wiped her face, and tuned her guitar to his frequency.