EX_136.md

music/exemplars/formula_cards/EX_136.md

Formula card EX_136 — Humming the Bassline

Game: Jet Set Radio · Composer: Hideki Naganuma · Purpose class: EXPLORATION

Tier: RUNG-1 MEASURED · measured 2026-08-07T00:59:23+00:00 · source format mov,mp4,m4a,3gp,3g2,mj2 at 44100 Hz

Length 257.941 s across 22 sections; baseline 103.36 bpm; key G# major.
Opens cold_statement; the hook lands at 0.197 s.
Arrangement runs up to 9 spectral lanes; melodic salience 0.7714 across 495 extracted notes.
Event grammar: 32 drops, 34 raises, 1 breaks, 38 tutti passages; silence budget 1.0%.
Dynamic range 13.02 dB, peak at 0% through the track.
Complexity steps 4 times across 111 bars, 3 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\SEGA\Jet Set Radio Future Sega (Original Trac\08 Humming the Bassline (D.S.Remix).m4a
SHA256: ed7a2573e79282a2181941c52ec5fff29dc66d4bd461ce1537e369e8baef6683
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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