EX_110.md

music/exemplars/formula_cards/EX_110.md

Formula card EX_110 — Want You Gone

Game: Portal 2 · Composer: Jonathan Coulton · Purpose class: CREDITS_TRIUMPH

Tier: RUNG-1 MEASURED · measured 2026-08-06T10:50:17+00:00 · source format mp3 at 44100 Hz

Length 141.584 s across 7 sections; baseline 198.77 bpm; key A major.
Opens fade_in; the hook lands at 0.035 s.
Arrangement runs up to 9 spectral lanes; melodic salience 0.8372 across 316 extracted notes.
Event grammar: 26 drops, 16 raises, 6 breaks, 29 tutti passages; silence budget 3.1%.
Dynamic range 10.59 dB, peak at 48% through the track.
Complexity steps 22 times across 117 bars, 4 of them at a section boundary.

Lanes are a spectral_band_proxy reading, not an instrument roster. Section 11.1 requires the lane method be declared. Bands are not instruments: two instruments in one octave read as one lane, and one instrument spanning two octaves reads as two. Entry/exit and simultaneity shapes are trustworthy; a roster is not claimed.
Bar arithmetic on this card uses 4 beats per bar at the baseline tempo. The onset period beside it is MEASURED; the signature is not.
A cadence census needs harmonic transcription and is a rung-2 dimension; the seam measurement is what rung 1 can honestly report about how it ends.
Windowed key agreement below ~0.7 is the modulation signal at rung 1; a pivot-chord map needs symbolic transcription (rung 2).

Source file: D:\audio\exemplars\Portal2-OST\Portal2-13-Want_You_Gone.mp3
SHA256: f06675cda58c93a21f75e1a5e41ebc7b7494b8d8c3c343044be07d00cdea5a04
Decoded by: ffmpeg.exe :: ffmpeg version 9.0-full_build-www.gyan.dev Copyright (c) 2000-2026 the FFmpeg developers
Legal posture: ANALYSIS FOR UNDERSTANDING ONLY. Audio lawfully obtained by Josh, read from disk, measured, and never copied, redistributed, or used as model input of any kind.

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