The chiming stopped. Mira pulled out her phone and saw the date read three years in the past, the same winter the tune first arrived. A message sat on the screen, unsent, written by her: 'Tell yourself the notes are real.' She hit send before she could stop herself, and the cold winter air swallowed her whole.

Mira decided to test the page. She took her own pen and wrote a new line under the words: 'Prove it.' The ink soaked in and vanished. A second later fresh writing rose up to answer, in handwriting that was hers but steadier: 'Look in your case.' She looked, and the coins had turned to glowing stones. She finally believed.