Nobody could explain the mechanism. Scientists from the university proposed acoustics and resonance; a historian suggested it was a sophisticated prank that tapped collective memory. But the items that surfaced were not merely sentimental—they were evidence of lives rearranged by neglect. Names reappeared from archives; debts were settled when a discovered deed was recognized by a bank clerk who watched a clip and remembered processing it. The city, it turned out, had been holding its own lost stories like a ledger, and the cassette had become a key.