'It was a key,' Sally said to the researcher. 'A harmonic tone. A varying algorithm, a tilt of the lilt, to alter thermodynamic pathways in the cerebellum, to alter his function. Keys can be replicated, and swapped,' she said. 'No One Tunes A Man. He isn't an instrument.' She looked at Johnny's holograph, pacing the room, his body now slowly decaying under their tombstone. 'He's going to be back, one day.'