Debussy
La cathedrale engloutie
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Soft low piano chords open in a spacious hall.
A slow line climbs over a deep sustained bass pedal.
The ascending phrase crests softly in the middle register, then the line drops back low.
After a brief quiet, the chords expand and put a little more weight into the room.
Fuller chords ring hard across the low and middle registers.
The mass eases; sustained resonance thins, and quieter mid notes settle back in.
Slow stacked chords climb with a heavier, more even tread.
Those chords soften into a gentler wash, leaving sparse notes in the quiet.
Delicate high notes sparkle above a quiet low pedal.
Flowing arpeggiated figures begin to ripple upward through the keyboard.
The figuration thickens, with richer harmony underneath and more motion as the register lifts.
Cascades pour downward in broad waves, then powerful chords strike over a deep bass rumble.
Heavy chords hang and decay into the hall as softer ripple figures return underneath.
Pressure gathers again; the piano’s mid and low body press forward with a slower, held tread.
The held tread loosens; the surface thins and the room opens around longer decays.
What remains is a suspended floor of soft chords and wide pedal space, barely moving.
Soft attacks keep arriving, each one slightly resetting the quiet field without filling it.
Pressure keeps releasing; the last tones withdraw and leave the hall empty.
Last updated Aug 15, 2026 · Written with Grok 4.5 · Galdr 0.7.0.dev0 · Inner Ear Gemini 3.5 Flash Lite

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La cathedrale engloutie
Debussy
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Music signal
Surface evidence
Harmony + melody
galdr concepts
Derived motion