Referencing Bell-Silence custody — The Sacred Ledger

Collapse of Saint Aurelia's Convoy
A reliquary procession folded inward and called it music
The A.S. 184 Rouen market incident in which an authenticated reliquary convoy collapsed under unseen Pale Chanter cadence, broke its cargo, and left Purity to burn the witnesses.
Codex Ref. VII.5.04-003