EX_102.md

music/exemplars/formula_cards/EX_102.md

Formula card EX_102 — Magus Castle

Game: Chrono Trigger · Composer: Yasunori Mitsuda · Purpose class: TENSION

Tier: RUNG-1 MEASURED · measured 2026-08-07T12:08:26+00:00 · source format mov,mp4,m4a,3gp,3g2,mj2 at 44100 Hz

Length 28.58 s across 4 sections; baseline 152.0 bpm; key E minor.
Opens fade_in; the hook lands at 5.12 s.
Arrangement runs up to 9 spectral lanes; melodic salience 0.9189 across 54 extracted notes.
Event grammar: 3 drops, 2 raises, 2 breaks, 8 tutti passages; silence budget 11.1%.
Dynamic range 50.68 dB, peak at 83% through the track.
Complexity steps 2 times across 18 bars, 1 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\iTunes_Sweep\Yasunori Mitsuda\Chrono Trigger (Original Soundtrack) [DS\2-22 Magus' Castle.m4a
SHA256: b99e8e371eaeb1f2bde416452e09b4837904087a876c637dd631ac499bbe4d15
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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