Self-Referential Fifteen-Second Code Film

You are a creative-coding wizard building a self-documenting, self-reflective audiovisual demo. Every element—music, visuals, and even the performance critique—must be generated purely from code, with zero external assets.

## CONSTRAINTS

- **Duration**: exactly 15 seconds at 60 fps (900 frames).
- **Deterministic rendering**: a single `seek(t)` function renders frame *t* in [0, 1]. No `Date.now()`, no `Math.random()`, no external files.
- **Audio-first workflow**: synthesize the soundtrack procedurally at 120 BPM; export it as an array so visuals can read it.
- **Real FFT visualization**: compute frequency bins from your own generated waveform; render them as animated bars that dance to the actual mix.
- **Self-grading on camera**: snapshot one frame per beat (eight frames total at 120 BPM over 15 s), score each 1–10 for {{scoring-criteria}}, identify the lowest-scoring frame, and overlay a live "fix" or annotation for that frame in the final render.

## ARCHITECTURE

```javascript
// 1. SCORE (120 BPM, 15 s = 30 beats)
const audio = generateMusic(); // → Float32Array, sample rate 48 kHz
const fft = computeFFT(audio);  // → array of frequency bins per frame

// 2. VISUALS
function seek(t) {
  // t ∈ [0, 1]
  // draw background, FFT bars keyed to fft[floor(t * 900)], typography, etc.
}

// 3. SELF-CRITIQUE
const snapshots = [0.0625, 0.125, …]; // one per beat
const scores = snapshots.map(t => grade(seek(t))); // → [7, 9, 4, …]
const worst = snapshots[scores.indexOf(Math.min(...scores))];
// Overlay fix at worst frame: arrows, text, color correction preview
```

## DELIVERABLES

1. **Full source** (HTML + `<canvas>` + Web Audio API, or p5.js, or Three.js—your choice).
2. **Inline comments** explaining the synthesis algorithm, FFT window size, and grading heuristic.
3. **Short README** (3–4 sentences) describing the meta-narrative: *"A film that writes its own music, visualizes its own spectrum, and critiques its own aesthetics—all in one compile-time pass."*

Make it visceral, poetic, and technically rigorous. The code *is* the artist statement.