Category Three Harmonic Anomaly

#On the Classification

"Too beautiful to be natural. Too useful to be investigated."

The Bureau of Bells has jurisdiction over every sound the Synod permits to be made on purpose: the curfew peal, the processional bell, and the hymn sung at the correct hour, in the correct key, by the correct throat. It has held some form of that jurisdiction since its constitution as the Office of Bells in A.S. 52. In the century and a half since, it has learned that most sound behaves. Sound that misbehaves receives a number.

The Gasket Choir of Bastion-Irongate received the number three. The full designation is Category Three Harmonic Anomaly. The Bureau's own gloss says the sound is too beautiful to be natural and too useful to be investigated. That gloss has passed from the Bureau's correspondence into the garrison's mouth. The soldiers quote it with the reverence they keep for anything that sounds like an excuse.

Readers who mistake the Codex for a lending library ask me what the other categories contain. This article concerns the Irongate. I do not hold the Bureau's ladder, its criteria, the name of the clerk who first wrote the numeral on the file, or the year in which he wrote it. Whatever I do not hold does not exist for the purposes of this Codex.

#On the Sound and the Seals

"The mountain sings because it must. So do we."

Two noises answer to the name. The Bureau has never said which of them it numbered.

The first belongs to the gorge. Where the Danube forces the Iron Gates, the fifth bastion of the Sagittal Line is bored into black basalt on both banks. When the wind runs along the river it enters the tunnel mouths of the cliff works and comes out as something the ear declines to file. People who have heard it from the galleries describe a chord. People who stood in the gauge rooms while it sounded describe something less pleasant to hear: the needles settling.

The second belongs to the garrison. In the Choir Nave, a basalt chamber lined with brass baffles, chant crews sing set sequences at set tempos while a reader watches the gauge board and calls corrections. The baffles send the voices outward through channels cut in the rock. The Transit Spine carries everything else between the chambers the sound must reach: rail carts, convoys, conscripts, and pressure.

The things the sound must reach are small. They are the gaskets between compartments, the micro-seals on the pressure doors, and the bolts seated in iron ribbing against wet stone. Held in the correct vibration, they hold. Left in silence, they creep, dry, crack, and work loose by amounts too small for any inspector's eye. A failed seal in one compartment hands its load to the next.

The gasket-hymn mechanics who service the fittings sing the seating sequence while they torque the bolt, then sign the ledger for both. The Bureau of Engineering accepts the torque figure. The Bureau of Bells accepts the hymn. Neither has ever countersigned the other.

The Nave smells of incense, brass polish and spit. The dust gets onto the tongue and stays there. Off shift, men wear wax in their ears and nobody mocks them for it.

#On the Great Hush

"Sing, or the stone sings for you."

The garrison learned of the dependency in the ordinary way, which is to say by burial.

In A.S. 94 an atmospheric inversion settled over the gorge and the tunnel mouths fell silent. The silence lasted nine hours. During it the pressure doors failed in sequence, each failure throwing its shock into the next set of seals. By the end, the Third Lung had collapsed into a single mass of basalt, iron and garrison. The Bureau of Records ratified the dead at three thousand. Excavation took eleven months.

The Great Hush is the only controlled experiment the Irongate has ever run on its own anomaly, and the weather ran it. The Bureau of Doctrine classified the event as an instructive demonstration of the wages of silence. Engineering filed a report. Nobody filed a hymn. I count that as the only lapse in procedure on record for the whole year.

Continuous chant followed. Before the Hush, the gorge sang when the wind allowed it. After the Hush, the garrison sang whether the wind allowed it or not: twenty-four hours a day, in rotating eight-hour watches, with no gap in the sequence that a gauge could detect. The wind still blows through the cliff works. Nobody at the Irongate is now willing to leave the matter in its keeping.

#On Licensed Breath

"Sing clean, sleep warm."

A sound that holds up a mountain cannot be left to volunteers. The Choir Magistracy governs the watches. It decides who sings, which stanza, at which tier, and what the singer's bunk costs. Voice-licensing was ratified in A.S. 97, three years after the Hush. It is the only part of the Category Three file that anyone at the Irongate fully understands.

The garrison confuses its numbers, so I set them out plainly. The licence tiers are numbered, the anomaly is numbered, and the two numberings have nothing to do with each other. A fifth-tier cantor is a man permitted to read the pressure ledger. A Category Three anomaly is a thing the Bureau declines to read.

Cantor Ys Varr presides over the auditions. The applicant holds a set harmonic at a set volume for a set duration while a warden watches a gauge. As far as the applicant can tell, the gauge watches him back. A man who fails loses his tier on the spot. Below the lowest tier stand the unlicensed. They are not expelled from the mountain. They are only taken off the heat allocation, which in a Carpathian winter comes to the same thing, administered more slowly.

The trouble is the dust. The labour the seals depend on fills the lungs that perform it. The Breath Office measures what breath remains with a candle held at arm's length: the flame bends, or it does not. Throat lozenges change hands at prices that would embarrass a moneylender. A clear voice means a warm bunk, and a cracked one is the first entry in an administrative death. Ys Varr's own supply of lozenges is said to be inexhaustible. I have no evidence otherwise, and I would not print it if I did.

#On Inquiry and Present Application

"If the echo answers, don't answer back."

Too useful to be investigated describes the Bureau's appetite, and it forbids nothing. The Bureau of Bells has in fact investigated. By the account I have from the gorge, it sent three commissions to the Irongate. The first returned with a report. The second returned with a hymn. The third did not return.

I print the account as I received it. I add no dates, names, findings or theories. The Bureau supplied none, and I am too old to start doing its work for it.

What the Bureau observes and what the Bureau understands are kept in separate ledgers. The observed ledger is full: the seals hold while the singing continues, and they fail in sequence when it stops. The other ledger, the one that would say why the mountain prefers a chord to a crossbeam, has a heading and nothing under it.

Two pressures now bear on the account. In the Underchords, the Counterkey Circle teaches harmonics the Magistracy did not prescribe. Its members speak in tap-code on the pipes and keep their throats to themselves. The Magistracy treats any unlicensed harmonic near a seal as an assault on the seal. The Hush Court has not been asked to prove the point. It has been asked to act on it, and it has.

The second pressure comes from the Dead Gallery. There, a voice thrown down the corridor arrives before the speaker has used it, or arrives in someone else's register. Engineering attributes this to acoustic refraction in limestone. The garrison attributes it to Morwen, the Weeping Host, who keeps her vigil opposite the gorge and is reported to collect voices the way the Magistracy collects licences. The Bureau of Bells has recorded both explanations and endorsed neither. Both lead to the same order: do not speak there alone.

The Choir sings. The seals hold. The Bureau of Bells has not told me of a fourth commission, and I have not asked.