Piano synth · qwen3.5-122b-a10b
Output generated Cost / run $0.0133 Runtime 31.7s
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.
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.
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METRICS
Transcript · 6 messages
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.
thinking
The user wants me to create a single-page web app with a playable piano keyboard that: 1. Uses Tone.js (already available as tone.min.js) 2. Has mouse and computer keyboard controls 3. Uses ADSR envelope for synthesis 4. Provides visual key feedback I'll create a self-contained index.html file with: - CSS styling for the piano keys - JavaScript using Tone.js for audio synthesis with ADSR envelope - Mouse click handlers - Computer keyboard key handlers (mapping keys like A, S, D, F, G, H, J, K to musical notes) - Visual feedback when keys are pressed Let me build this step by step in one HTML file.
index.html (14177 bytes)Successfully wrote 14177 bytes to index.html
thinking
I've created a complete single-page web app with: 1. **Tone.js integration** - Using the pre-loaded tone.min.js 2. **PolySynth with ADSR envelope** - Triangle oscillator with attack, decay, sustain, release settings 3. **Mouse controls** - Click and drag on keys to play 4. **Computer keyboard controls** - Keys A, S, D, F, G, H, J, K, L, ; for white keys and W, E, T, Y, U, O, P for black keys 5. **Visual feedback** - Keys light up when pressed (white keys turn gold, black keys turn orange) 6. **Audio visualization** - FFT spectrum analyzer showing real-time frequency bars 7. **Reverb effect** - Added for richer sound 8. **Start overlay** - Required due to browser autoplay policies 9. **Status display** - Shows current note being played The piano has 17 keys covering C4 through E5 with both white and black keys properly positioned. Let me verify the file was created correctly.
{"command":"ls -la index.html && head -20 index.html"}-rw-r--r--. 1 node node 14183 Aug 1 20:29 index.html <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>Playable Piano Keyboard</title> <script src="tone.min.js"></script> <style> * { margin: 0; padding: 0; box-sizing: border-box; } body { min-height: 100vh; display: flex; flex-direction: column; align-items: center; justify-content: center;
thinking
The file was created successfully. The piano keyboard app is complete with: 1. **Tone.js PolySynth** with ADSR envelope (attack: 0.01s, decay: 0.1s, sustain: 0.5, release: 0.5s) 2. **Triangle oscillator** for a nice synth sound 3. **Reverb effect** for richer audio 4. **FFT analyzer** for real-time visualization 5. **Mouse controls** - click and drag on keys 6. **Computer keyboard** - A S D F G H J K L ; for white keys, W E T Y U O P for black keys 7. **Visual key feedback** - Keys glow when pressed 8. **Frequency bar visualizer** at the bottom 9. **Start overlay** to handle browser autoplay policies The file is self-contained with CSS in `<style>` and JS in `<script>` tags, loads tone.min.js locally, and has no external dependencies.
Done! I've created `index.html` with a fully functional piano keyboard featuring: **Audio Features:** - Tone.js PolySynth with triangle oscillator - ADSR envelope (attack: 0.01s, decay: 0.1s, sustain: 0.5, release: 0.5s) - Reverb effect for richer sound - FFT spectrum analyzer for visualization **Controls:** - **Mouse**: Click or drag across keys to play - **Keyboard**: - White keys: `A S D F G H J K L ;` - Black keys: `W E T Y U O P` **Visual Feedback:** - Keys light up gold/orange when pressed - Real-time frequency bar visualizer at bottom - Status display showing current note **17 keys** spanning C4 to E5 with proper black key positioning. Open `index.html` in a browser and click "Start" or press any key to begin playing!