Mateo lived for nights that started slow and ended loud. He made playlists the way other people kept diaries. His Mac hosted everything he’d ever played: a wedding where his palms shook, a rooftop set under a meteor shower, the tiny bar where he learned to bend house into something softer. Each set carried fingerprints — tempo choices, cue points, the tiny mistakes that made him human. He wondered, as he dragged the installer to Applications, what a machine would make of that map.