One Thousand and One Conjectures

The famous illustrated Exultet rolls of southern Italy — liturgical scrolls sung once a year at the Easter vigil — are usually explained by display aesthetics. This conjecture ties the roll format instead to the region's notarial economy: Exultet rolls were produced…

A tonary is a Carolingian book that sorts hundreds of chants into eight modal bins; a polyptych is a Carolingian estate survey that sorts hundreds of holdings into fiscal bins. This conjecture claims they are the same administrative technology in two departments:…

New saints' feasts spread across Europe's service books over decades, and the spread is usually narrated house by house. This conjecture quantifies it against a non-musical benchmark: the lag between a feast's institution and its appearance in a region's antiphoners matches the…

Stray neumes turn up on the backs and margins of charters and on flyleaves, and they are catalogued as pen trials. This conjecture claims a legal function for a distinct subset: neumes were added to property documents that were contested or vulnerable,…

Reformed monastic orders kept their chant uniform by sending cantors and summoning monks to the motherhouse; staff notation made a book capable of correcting a choir without a visitor. This conjecture claims the two were substitutes in a measurable way: within an…

Wax writing tablets were the scratch paper of the Middle Ages, and cathedral account rolls record their purchase in pennies. This conjecture claims the tablets betray composition: because new chant and its notation were drafted on wax before parchment, an institution's tablet…

A 'noted breviary' packs the whole office, music included, into one volume — an engineering compromise, since choirs preferred specialized books. This conjecture claims the compromise has a demographic address: noted breviaries concentrate in areas of dispersed rural settlement and poor parishes,…

Rome sang two chants: the 'Old Roman' dialect surviving in a handful of city manuscripts, and the Gregorian that conquered Europe and eventually Rome itself. This conjecture claims the survival pattern inside Rome was a property fact: churches that kept Old Roman…

Church organs and the Black Death sit in different chapters of the textbook. This conjecture connects them as a labor-market event: institutional spending on organs and organists accelerates sharply after the 1348-1400 mortality collapse because the organ substituted capital for suddenly expensive…

When a monk or abbess died, a messenger carried a mortuary roll — a parchment scroll — from monastery to monastery, each house adding a dated, located entry with prayers and often verse; some rolls collected hundreds of entries across years. This…

Written polyphony — music in independent parts — appears in some institutions and not others, a distribution usually explained by artistic ambition. This conjecture explains it administratively: notated polyphony arises only in institutions that had already individuated their personnel accounts — paying…

Calendars in service books upgrade feasts over time — a saint moves from a plain entry to nine lessons to a red-letter solemnity — and these upgrades are treated as devotional weather. This conjecture treats them as receipts: within a given church,…

The first Latin neumes appear around the 890s-920s, a full century after Charlemagne ordered empire-wide chant uniformity — a gap usually explained by slow invention. This conjecture claims the geography, not just the chronology, is administrative: the earliest neumed manuscripts cluster in…

The plenary missal — one volume merging the prayers, readings, and chants that older practice split across sacramentary, lectionary, and gradual — took over Latin Europe between 1000 and 1300, and liturgists explain it by the rise of private masses. This conjecture…

Tropers — personal-format books of optional festal chants — have transmission patterns that refuse to follow monastic family trees, which frustrates stemmatics. This conjecture claims they follow people instead of institutions: trope concordances between houses match the documented movements of individual monks…

The processional is the smallest of the notated service books, and surviving copies are strikingly often from women's convents — an observation that usually rests at anecdote. This conjecture gives it a legal mechanism and a number: strict enclosure rules made nuns…