Arpeggiator pad · qwen3.6-27b
Using the pre-provided tone.min.js (global Tone), build a clickable pentatonic pad grid that triggers a synth voice with reverb, plus a play/stop button that runs an arpeggiator sequence at an adjustable tempo. All sound synthesized, no audio files.
transcript · 10 messages
Using the pre-provided tone.min.js (global Tone), build a clickable pentatonic pad grid that triggers a synth voice with reverb, plus a play/stop button that runs an arpeggiator sequence at an adjustable tempo. All sound synthesized, no audio files.
thinking
The user wants me to build a single-page web app using Tone.js (already provided as tone.min.js) that: 1. Has a clickable pentatonic pad grid that triggers synth voices with reverb 2. Has a play/stop button running an arpeggiator sequence 3. Has adjustable tempo 4. All in one index.html file with inline CSS and JS 5. No external resources, CDNs, or network requests Let me first check what's in the current directory to confirm tone.min.js is there.
{"command":"ls -la /workspace/"}total 388 drwxrwxrwx 3 node node 96 Jul 31 02:53 . drwxr-xr-x 1 root root 4096 Jul 31 02:53 .. -rw-r--r-- 1 node node 349169 Jul 31 02:53 tone.min.js
thinking
Good, tone.min.js is present. Let me build the single-page app now. I'll create a pentatonic pad grid with: - A pentatonic scale (C major pentatonic across 2 octaves = 15 keys, arranged as a 5x3 grid or similar) - Synth with reverb - Play/stop button for arpeggiator - Tempo control (slider) Let me design this carefully: **Pentatonic Scale (C Major Pentatonic):** C, D, E, G, A I'll do 2 octaves, 10 keys or maybe 3 octaves (15 keys) arranged as a 5x3 grid: - Columns: C, D, E, G, A - Rows: octave 4, 5, 6 Frequencies for C major pentatonic: - C4: 261.63, D4: 293.66, E4: 329.63, G4: 392.00, A4: 440.00 - C5: 523.25, D5: 587.33, E5: 659.25, G5: 783.99, A5: 880.00 - C6: 1046.50, D6: 1174.66, E6: 1318.51, G6: 1567.98, A6: 1760.00 The grid will be 5 columns × 3 rows = 15 pads. Each pad on click triggers a synth note. For the arpeggiator, I'll cycle through these notes in sequence. Let me write the full index.html:
/workspace/index.html (10680 bytes)Successfully wrote 10680 bytes to /workspace/index.html
thinking
Let me verify the file is in place:
{"command":"ls -lh /workspace/index.html"}-rw-r--r-- 1 node node 11K Jul 31 02:54 /workspace/index.html
thinking
The file is in place. Let me verify the structure quickly — that the script src loads tone.min.js correctly, and nothing references an external CDN.
{"command":"head -8 /workspace/index.html"}<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>Pentatonic Pad Grid</title> <script src="tone.min.js"></script> <style>
thinking
Perfect. The file is complete with the correct structure. Let me give a summary to the user.
Done. `/workspace/index.html` is a fully self-contained single-page app that loads `tone.min.js` locally. Here's what it provides: **Pentatonic Pad Grid** - 15 pads arranged in a 5×3 grid (C-D-E-G-A across octaves 4–6, the C major pentatonic scale) - Click any pad to trigger a triangle-wave synth voice through a convolution reverb (2.5s decay, 35% wet) - Each press triggers an 8th-note tone with polyphony up to 10 voices **Arpeggiator** - **Play Arp** button starts/cancels a sequencer that steps through all 15 pads in order - The currently-playing pad glows gold so you can follow along - Press **Space** as a keyboard shortcut **Tempo Control** - Range slider from 60 to 240 BPM (default 120) - Adjusting tempo while the arpeggiator is running updates it live at 8th-note resolution **Audio chain:** `PolySynth (triangle oscillator) → Reverb (2.5s) → Destination` — all synthesized, zero audio files.
TAKE IT TO CODE
A single self-contained HTML file — copy it and open in any browser, or reuse the prompt with your own pi-agent run.
RUN
EVALUATION
Pentatonic pad grid with arpeggiator toggled by Space; arrow/WASD keys trigger pad highlights; click/drag/wheel show no visible change.
Vision grade · anthropic/claude-sonnet-5
MEASUREMENTS
Raw readings from the capture, not a verdict — the grade above is the only judgement. Percentages are how much of the screen changed; the measure under-reports sparse motion on a dark background.