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Arpeggiator pad · qwen3.5-122b-a10b

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.

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user

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.

assistant
thinking
The user wants me to build a single-page web app with:
1. A clickable pentatonic pad grid that triggers a synth voice with reverb
2. A play/stop button that runs an arpeggiator sequence at adjustable tempo
3. All sound synthesized (no audio files)
4. Use tone.min.js which is already present in the current directory

Let me first check if tone.min.js exists in the current directory, then create the index.html file with all the functionality.

I'll need to:
1. Create a pentatonic scale (e.g., C major pentatonic: C, D, E, G, A)
2. Build a grid of pads that trigger notes with a synth + reverb effect
3. Add a play/stop button for an arpeggiator
4. Add tempo control
5. Make everything self-contained in one HTML file

Let me write this comprehensive music app.
bash {"command":"ls -la /tmp/ws/"}
toolResult

total 344 drwxr-sr-x. 2 node node 25 Aug 1 19:41 . drwxrwsrwx. 3 root node 16 Aug 1 19:41 .. -rw-r--r--. 1 node node 349169 Aug 1 19:41 tone.min.js

assistant
thinking
Good, tone.min.js is present. Now I'll create the index.html file with:
1. Pentatonic pad grid (5x4 or similar layout)
2. Synth voice with reverb using Tone.js
3. Play/stop button for arpeggiator
4. Tempo control slider
5. All CSS and JS inline

Let me write a comprehensive music app.
write /tmp/ws/index.html (12028 bytes)
toolResult

Successfully wrote 12028 bytes to /tmp/ws/index.html

assistant
thinking
The file has been created. Let me verify it exists and is complete.
bash {"command":"ls -la /tmp/ws/index.html && head -20 /tmp/ws/index.html && echo \"...\" && tail -10 /tmp/ws/index.html"}
toolResult

-rw-r--r--. 1 node node 12030 Aug 1 19:41 /tmp/ws/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 & Arpeggiator</title> <script src="tone.min.js"></script> <style> * { margin: 0; padding: 0; box-sizing: border-box; } body { min-height: 100vh; background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%); font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; display: flex; flex-direction: column; ... e.preventDefault(); toggleArpeggiator(); } }); // Initialize createPadGrid(); </script> </body> </html>

assistant
thinking
The file has been created successfully. Let me summarize what I built for the user.

Done! Created `/tmp/ws/index.html` with: **Features:** - **16-pad pentatonic grid** (C Major Pentatonic across 4 octaves) - click/tap pads to trigger notes - **Polyphonic synth voice** with triangle wave, ADSR envelope - **Effects chain**: Reverb → Lowpass Filter → Feedback Delay - **Play/Stop button** - starts a dynamic arpeggiator with 8 different patterns (ascending, descending, skip patterns, fifth jumps) - **Tempo slider** - adjustable from 60-240 BPM with live display - **Keyboard shortcut** - Space bar toggles play/stop - **Visual feedback** - pads light up when triggered by both clicking and arpeggiator **All synthesized** using Tone.js - no audio files or external resources required. Just open `index.html` in a browser and click PLAY to start.

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

modelqwen3.5-122b-a10b
vendorQwen
harnesspi-agent
generated2026-08-01

EVALUATION

4/5 working

Pentatonic pad grid with play/stop toggling to arpeggiator, pads highlight, tempo slider visible, clean UI.

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.

idle motion0.0%
on click0.9%
on drag0.2%
on wheel0.1%
on enter + space1.3%
on arrow keys0.8%
on w/a/s/d0.4%
frame spread39 / 255
console errors0
js errors none

METRICS

runtime31.3s
tokens in15k
tokens out4.1k
cached0
cost / run$0.0126