# Music bed — source and license

**Work:** J.S. Bach — *The Art of the Fugue* (Die Kunst der Fuge), BWV 1080,
Contrapunctus 1–11.
**Performer:** Kimiko Ishizaka, piano (Bösendorfer 280VC) — *Libre Art of the Fugue*,
recorded May 2017 at Teldex Studio Berlin (engineer Anne-Marie Sylvestre).
**License:** **CC0 1.0 Universal (public-domain dedication)** — covers this specific
recording, not just the 1740s composition. No attribution required (credited anyway in
`/guide` and `humans.txt`). Verified per file on 2026-07-10 at:

- Internet Archive item (license box + machine-readable `licenseurl`):
  https://archive.org/details/pandacd-715-js-bach-the-art-of-the-fugue-kunst-der-fuge-bwv-1080
  — metadata JSON proof: https://archive.org/metadata/pandacd-715-js-bach-the-art-of-the-fugue-kunst-der-fuge-bwv-1080
  (`licenseurl: https://creativecommons.org/publicdomain/zero/1.0/`, `access-restricted: none`)
- The artist's own album page, CC0 stated:
  https://kimikoishizaka.bandcamp.com/album/j-s-bach-the-art-of-the-fugue-kunst-der-fuge-bwv-1080
- Provenance (the crowdfunded libre-recording project, same team as the Open Goldberg):
  https://www.kickstarter.com/projects/opengoldberg/libre-art-of-the-fugue

## Why this work, here

The Art of the Fugue is ONE musical subject unfolding into a network of fugues — a single
idea wired into many forms. That is this site's exact argument about the drawings. The
first eleven Contrapuncti (~42 minutes) are used, in order: the subject and its direct
elaborations — "one idea wiring into many" — looped as a quiet bed that ducks (never
stops) under Robert's voice.

## Files used (tracks 01–11 of the Internet Archive item above)

Contrapunctus 1, 2, 3, 4, 5, 6 a 4 in Stylo Francese, 7 a 4 per Augmentationem,
8 a 3, 9 a 4 alla Duodecima, 10 a 4 alla Decima, 11 a 4.

## Rebuild recipe

`scripts/build-bed.sh` (repo root) — downloads the 11 CC0 MP3s from the Internet Archive
item into `scripts/bed-src/` (git-ignored), concatenates them with light loudness
normalization (ffmpeg loudnorm I=-19) into a single `bed.mp3` (~42 min, VBR ~q4).
Re-runnable; skips files already downloaded. To swap the music entirely, replace
`public/audio-bed/bed.mp3` and update `/guide` + `humans.txt` + this file.