A living orchestra that forgot most of its own program

Claim (verbatim)

Japanese gagaku preserves togaku (唐楽), a repertoire descended from the banquet music of the Tang court, and the Picken-Marett programme (Music from the Tang Court, seven volumes, 1981-2000) argued that the modern pieces are genuine, if enormously slowed, Tang survivals - the strongest claim anywhere that Tang instrumental music can still be heard. Grant the claim and it deepens the loss rather than lifting it: what survives is a living remnant of a repertoire that was vast. The Tang side is enumerable - Cui Lingqin's Jiaofang ji (教坊記) names about 324 Music Bureau tunes - and the Japanese side is enumerable too: the togaku canon fixed by the Meiji standardization (the Meiji senteifu, 明治撰定譜, 1888) and performed by the Imperial Household Agency runs to only a few dozen pieces. If the living tradition is a Tang survival, then the title-overlap between the Tang name-list and the modern canon measures how little of the Tang program crossed the sea and stayed alive. The mechanism is institutional transplant with attrition: a court repertoire carried abroad keeps only what its new ritual calendar had slots for. Prediction restated: the modern togaku canon matches under a tenth of the Jiaofang ji's titles, and - the inversion that proves survival-by-exile - a majority of surviving togaku pieces have no counterpart in any notated Chinese source at all, living as sounding music only in Japan.

Prediction clause (verbatim)

Prediction: matching the modern togaku repertoire (the pieces of the Meiji senteifu / current Imperial Household Agency canon) against the roughly 324 titles of the Jiaofang ji (教坊記), fewer than 32 of the Jiaofang ji titles (under 10 percent) will have a securely-surviving togaku counterpart; and of the surviving togaku pieces themselves, a majority will have no extant Chinese notated source, surviving as sounding music only in Japan. Primary clause: Jiaofang-ji-to-togaku title survival is under 10 percent. Disambiguation: a survival requires a defended Sino-Japanese title/etymon identification in the Picken-Marett volumes or equivalent scholarship, not a guessed cognate. Coverage guard: if the modern togaku canon as delimited numbers fewer than 20 pieces, the test voids.

Kill-dataset (verbatim)

Kill: the Jiaofang ji (教坊記) tune-list against the togaku repertoire list of the Meiji senteifu (明治撰定譜) / Imperial Household Agency, with title identifications taken from Picken et al., Music from the Tang Court - count Tang titles with a surviving togaku match, and count togaku pieces lacking any Chinese notated source.

Novelty / leakage triage

anticipated in the literature — this exact test has never been run

The Picken-Marett programme is the published prior art: its volumes defend Sino-Japanese identifications piece by piece and cite the Jiaofang ji among the Tang attestations, Marett's article poses the where-have-the-melodies-gone question directly, and Garfias documents the Meiji-standardized canon of a few dozen pieces. But the Jiaofang-ji-denominator survival rate is nowhere computed - Music from the Tang Court tabulates togaku-to-China, and reading those tables backward into a 324-title census with a 10-percent threshold is un-run arithmetic. The secondary clause (most togaku pieces lack any extant Chinese notated source) is guaranteed, since Chinese notation of this repertoire is essentially confined to the Dunhuang scroll, but the primary Jiaofang ji rate stands untested.

• L. Picken et al., Music from the Tang Court, 7 vols (Oxford/Cambridge: OUP then CUP, 1981-2000)
• A. Marett, 'Togaku: Where Have the Tang Melodies Gone, and Where Have the New Melodies Come From?', Ethnomusicology 29/3 (1985)
• R. Garfias, Music of a Thousand Autumns: The Togaku Style of Japanese Court Music (Berkeley: University of California Press, 1975)

Predictions

No prediction registered yet.