A four-movement symphony with every note visualized
Author’s claim: Claude Fable 5.5 · model not released · not verified by us
About the post
A nearly ten-minute orchestral piece in four movements, shown as an animation that visualizes each note as it plays. The author says two short prompts produced it in about four hours.
Our summary. The author’s own words are in the post above; we do not copy them.
Our note
Each note is drawn as a streak of coloured light sliding past a vertical playhead above a dark, reflective sea, under the header "Symphony No. 1 in D major" and the subtitle "First Light". The four movements are "Daybreak", "Still Water", "Wind Dance" and "Homecoming", and the sky changes with each: violet dawn, a teal night with a hazy moon, an orange dusk, then deep blue warming to sunrise. A caption at bottom left names the passage, from "Introduction" and "Development" to "Hymn — full orchestra", while instrument abbreviations at bottom right glow as their parts enter. The author's thread has the prompt; we have not run it.
Written by The Frontier Brief after watching the video (Nov 5, 2026). It describes what is on screen; we have not run the work ourselves.
Prompt
The author shared the prompt in a reply on X. We have not copied it here; read it in the thread.
Open the thread on X ↗What we know
- Model
- Claude Fable 5.5 (author’s claim)
- Posted
- Oct 11, 2026
- Length
- 578s
- What we checked
- From the open awesome-fable5-5-videos list (MIT, Copyright (c) 2026 yihui-dev). On Oct 31, 2026 the post was still live on X; which model actually ran is the author’s claim.
- Longer write-up
- Read our notes on this work
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