Piano synth · qwen3.6-plus

Output generated Cost / run $0.0133 Runtime 77.9s

Prompt for this run

Using the pre-provided tone.min.js (global Tone), build a playable piano keyboard controlled by mouse and computer keys that synthesizes notes with an ADSR envelope and visual key feedback.

⛨ sandboxed Open in new tab ↗

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

modelqwen3.6-plus

vendorQwen

harnesspi-agent

generated2026-08-01

METRICS

runtime77.9s

tokens in15k

tokens out4.3k

cached0

cost / run$0.0133

Transcript · 8 messages

user

Using the pre-provided tone.min.js (global Tone), build a playable piano keyboard controlled by mouse and computer keys that synthesizes notes with an ADSR envelope and visual key feedback.

assistant

thinking

The user wants me to build a single-page web app that creates a playable piano keyboard using tone.min.js (which is already in the current directory). Let me first check the current directory to confirm tone.min.js exists, then build the app.

Let me first check the current directory and examine tone.min.js to understand its API.

→ bash {"command":"ls -la /tmp/ws/tone.min.js 2>/dev/null; echo \"---\"; head -c 500 /tmp/ws/tone.min.js 2>/dev/null"}

toolResult

-rw-r--r--. 1 node node 349169 Aug 1 17:53 /tmp/ws/tone.min.js --- /*! For license information please see Tone.js.LICENSE.txt */ !function(t,e){"object"==typeof exports&&"object"==typeof module?module.exports=e():"function"==typeof define&&define.amd?define([],e):"object"==typeof exports?exports.Tone=e():t.Tone=e()}("undefined"!=typeof self?self:this,(()=>(()=>{var t={382:function(t,e,s){!function(t,e,s,n){"use strict";function i(t){return t&&"object"==typeof t&&"default"in t?t:{default:t}}var o=i(e),r=i(s),a=i(n),c=function(t,e,s){return{endTime:e,insertTime:s

assistant

thinking

The file is there. Tone.js is loaded as a global `Tone` object. Let me build a full piano keyboard app.

Now I'll create the full self-contained piano app.

→ write /tmp/ws/index.html (10149 bytes)

toolResult

Successfully wrote 10149 bytes to /tmp/ws/index.html

assistant

thinking

The file has been created successfully. Let me verify it's there and properly formed.

→ bash {"command":"ls -la /tmp/ws/index.html /tmp/ws/tone.min.js"}

toolResult

-rw-r--r--. 1 node node 10223 Aug 1 17:54 /tmp/ws/index.html -rw-r--r--. 1 node node 349169 Aug 1 17:53 /tmp/ws/tone.min.js

assistant

thinking

The user wants me to build a piano keyboard web app. I've already created the index.html file. Let me verify it's correct and complete.

Let me review what I've built:
1. A self-contained HTML file with inline CSS and JS
2. Loads tone.min.js from the local directory
3. Piano keyboard with mouse and keyboard controls
4. ADSR envelope via Tone.PolySynth
5. Visual key feedback (active state styling)
6. Waveform visualization
7. Touch support
8. Keyboard shortcuts mapped

The file is created and both files exist. The user's request is satisfied - index.html is present in the current directory and uses the pre-provided tone.min.js.

Let me just confirm the file exists as requested.

Done! `index.html` is created in `/tmp/ws/`. Here's what it includes: - **Piano keyboard** with 2+ octaves (C3–B4) — white and black keys styled with gradients and shadows - **Mouse/touch control** — click, drag across keys, or tap on mobile - **Keyboard shortcuts** — `A S D F G H J K L ; '` for white keys, `W E T Y U O P [ ]` for black keys - **ADSR envelope** via `Tone.PolySynth` with attack: 15ms, decay: 200ms, sustain: 0.45, release: 800ms - **Waveform visualizer** that glows red when notes are playing - **Reverb** effect for richer sound - **Visual feedback** — keys change color and depress when active