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Piano synth · mistral-large-4-0

Output saved · Stopped by an API error Cost / run $0.0686 Runtime 206.7s

A model request failed and its retries ran out. The output is the HTML saved before that.

Prompt for this run

Build a playable piano keyboard using the provided Tone.js library. Use HTML, CSS, and JavaScript as needed. Write it to `index.html` in the current working directory using your file tools. Inline your own CSS and JavaScript. Do not use external assets, CDNs, or network requests. Use the provided `tone.min.js` (global `Tone`) through a plain local script tag; the runner will inline it into the final artifact. Required behavior: - Display one chromatic octave from C4 through C5, with correctly placed black and white keys and visible note labels. - Map computer keys A W S E D F T G Y H U J K in order to those 13 notes. Pressing a screen key or its computer key starts the note; releasing it starts the envelope's release phase. - Use a synthesized voice with an ADSR envelope and support at least three simultaneous notes. Highlight keys while held. Prevent keyboard auto-repeat from creating duplicate sustained voices. - Release held voices when the pointer is released outside a key or the window loses focus, so notes cannot remain stuck. - Activate audio through a user gesture and synthesize all sound without audio files. Display the computer-key mapping. Verify: Play a few notes using the available mouse and keyboard actions. Check note/key labeling, any observable press-and-release highlighting, and the console after audio activation. Briefly inspect the input handlers for matching note-start and note-release behavior.

⛨ 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

modelmistral-large-4-0
vendorMistral AI
harnesspi 0.87.1 · browser iteration
generated2026-10-06

METRICS

runtime206.7s
tokens in89k
tokens out5.5k
cached5.6k
cost / run$0.0686
Transcript · 25 messages
system

user

Build a playable piano keyboard using the provided Tone.js library. Use HTML, CSS, and JavaScript as needed. Write it to `index.html` in the current working directory using your file tools. Inline your own CSS and JavaScript. Do not use external assets, CDNs, or network requests. Use the provided `tone.min.js` (global `Tone`) through a plain local script tag; the runner will inline it into the final artifact. Required behavior: - Display one chromatic octave from C4 through C5, with correctly placed black and white keys and visible note labels. - Map computer keys A W S E D F T G Y H U J K in order to those 13 notes. Pressing a screen key or its computer key starts the note; releasing it starts the envelope's release phase. - Use a synthesized voice with an ADSR envelope and support at least three simultaneous notes. Highlight keys while held. Prevent keyboard auto-repeat from creating duplicate sustained voices. - Release held voices when the pointer is released outside a key or the window loses focus, so notes cannot remain stuck. - Activate audio through a user gesture and synthesize all sound without audio files. Display the computer-key mapping. Verify: Play a few notes using the available mouse and keyboard actions. Check note/key labeling, any observable press-and-release highlighting, and the console after audio activation. Briefly inspect the input handlers for matching note-start and note-release behavior.

assistant
→ bash {"command":"ls -la /tmp/job-nPdYBv && head -c 300 /tmp/job-nPdYBv/tone.min.js"}
toolResult

total 356 drwx------ 3 node node 4096 Oct 6 15:15 . drwxrwxrwt 6 root root 4096 Oct 6 15:15 .. drwxr-xr-x 3 node node 4096 Oct 6 15:15 .home -rw-r--r-- 1 node node 349169 Oct 6 15:15 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

assistant
→ write /tmp/job-nPdYBv/index.html (10005 bytes)
toolResult

Successfully wrote to /tmp/job-nPdYBv/index.html

assistant
→ browser {"action":"inspect"}
toolResult

Frame 1, +0ms

[Browser image supplied to model]

{"console":["warning: An iframe which has both allow-scripts and allow-same-origin for its sandbox attribute can escape its sandboxing.","log: %c * Tone.js v14.8.49 * background: #000; color: #fff","error: Creating a worker from 'blob:http://127.0.0.1:45817/30fdabd1-cac5-4819-8cc0-a734a1301afb' violates the following Content Security Policy directive: \"worker-src 'none'\". The action has been blocked.","warning: The AudioContext was not allowed to start. It must be resumed (or created) after a user gesture on the page. https://developer.chrome.com/blog/autoplay/#web_audio","warning: The AudioContext was not allowed to start. It must be resumed (or created) after a user gesture on the page. https://developer.chrome.com/blog/autoplay/#web_audio","warning: The AudioContext was not allowed to start. It must be resumed (or created) after a user gesture on the page. https://developer.chrome.com/blog/autoplay/#web_audio","warning: The AudioContext was not allowed to start. It must be resumed (or created) after a user gesture on the page. https://developer.chrome.com/blog/autoplay/#web_audio","warning: The AudioContext was not allowed to start. It must be resumed (or created) after a user gesture on the page. https://developer.chrome.com/blog/autoplay/#web_audio","warning: The AudioContext was not allowed to start. It must be resumed (or created) after a user gesture on the page. https://developer.chrome.com/blog/autoplay/#web_audio","warning: The AudioContext was not allowed to start. It must be resumed (or created) after a user gesture on the page. https://developer.chrome.com/blog/autoplay/#web_audio"],"dom":"🎹 Tone.js Piano\nOne chromatic octave: C4 → C5\nClick anywhere or press a key to enable audio\nA\nC4\nW\nC#4\nS\nD4\nE\nD#4\nD\nE4\nF\nF4\nT\nF#4\nG\nG4\nY\nG#4\nH\nA4\nU\nA#4\nJ\nB4\nK\nC5\nCOMPUTER KEYBOARD MAPPING\nKey\tNote\tKey\tNote\nA\tC4\tW\tC#4\nS\tD4\tE\tD#4\nD\tE4\tF\tF4\nT\tF#4\tG\tG4\nY\tG#4\tH\tA4\nU\tA#4\tJ\tB4\nK\tC5\nHold a screen key or computer key to sustain. Release to let the note fade out. Works with at least 3 notes at once.","images":"attached"}

assistant

The page renders correctly. Now let me test interactions: click a key, press computer keys, check highlighting and console.

→ browser {"action":"click","x":450,"y":380}
→ browser {"action":"key","text":"a"}
→ browser {"action":"key","text":"s"}
→ browser {"action":"key","text":"d"}
toolResult

Frame 1, +0ms

[Browser image supplied to model]

{"console":["warning: An iframe which has both allow-scripts and allow-same-origin for its sandbox attribute can escape its sandboxing.","log: %c * Tone.js v14.8.49 * background: #000; color: #fff","error: Creating a worker from 'blob:http://127.0.0.1:45817/30fdabd1-cac5-4819-8cc0-a734a1301afb' violates the following Content Security Policy directive: \"worker-src 'none'\". The action has been blocked.","warning: The AudioContext was not allowed to start. It must be resumed (or created) after a user gesture on the page. https://developer.chrome.com/blog/autoplay/#web_audio","warning: The AudioContext was not allowed to start. It must be resumed (or created) after a user gesture on the page. https://developer.chrome.com/blog/autoplay/#web_audio","warning: The AudioContext was not allowed to start. It must be resumed (or created) after a user gesture on the page. https://developer.chrome.com/blog/autoplay/#web_audio","warning: The AudioContext was not allowed to start. It must be resumed (or created) after a user gesture on the page. https://developer.chrome.com/blog/autoplay/#web_audio","warning: The AudioContext was not allowed to start. It must be resumed (or created) after a user gesture on the page. https://developer.chrome.com/blog/autoplay/#web_audio","warning: The AudioContext was not allowed to start. It must be resumed (or created) after a user gesture on the page. https://developer.chrome.com/blog/autoplay/#web_audio","warning: The AudioContext was not allowed to start. It must be resumed (or created) after a user gesture on the page. https://developer.chrome.com/blog/autoplay/#web_audio","warning: The AudioContext is \"suspended\". Invoke Tone.start() from a user action to start the audio.","warning: The AudioContext is \"suspended\". Invoke Tone.start() from a user action to start the audio."],"dom":"🎹 Tone.js Piano\nOne chromatic octave: C4 → C5\nAudio ready — play!\nA\nC4\nW\nC#4\nS\nD4\nE\nD#4\nD\nE4\nF\nF4\nT\nF#4\nG\nG4\nY\nG#4\nH\nA4\nU\nA#4\nJ\nB4\nK\nC5\nCOMPUTER KEYBOARD MAPPING\nKey\tNote\tKey\tNote\nA\tC4\tW\tC#4\nS\tD4\tE\tD#4\nD\tE4\tF\tF4\nT\tF#4\tG\tG4\nY\tG#4\tH\tA4\nU\tA#4\tJ\tB4\nK\tC5\nHold a screen key or computer key to sustain. Release to let the note fade out. Works with at least 3 notes at once.","images":"attached"}

toolResult

Frame 1, +0ms

[Browser image supplied to model]

{"console":["warning: An iframe which has both allow-scripts and allow-same-origin for its sandbox attribute can escape its sandboxing.","log: %c * Tone.js v14.8.49 * background: #000; color: #fff","error: Creating a worker from 'blob:http://127.0.0.1:45817/30fdabd1-cac5-4819-8cc0-a734a1301afb' violates the following Content Security Policy directive: \"worker-src 'none'\". The action has been blocked.","warning: The AudioContext was not allowed to start. It must be resumed (or created) after a user gesture on the page. https://developer.chrome.com/blog/autoplay/#web_audio","warning: The AudioContext was not allowed to start. It must be resumed (or created) after a user gesture on the page. https://developer.chrome.com/blog/autoplay/#web_audio","warning: The AudioContext was not allowed to start. It must be resumed (or created) after a user gesture on the page. https://developer.chrome.com/blog/autoplay/#web_audio","warning: The AudioContext was not allowed to start. It must be resumed (or created) after a user gesture on the page. https://developer.chrome.com/blog/autoplay/#web_audio","warning: The AudioContext was not allowed to start. It must be resumed (or created) after a user gesture on the page. https://developer.chrome.com/blog/autoplay/#web_audio","warning: The AudioContext was not allowed to start. It must be resumed (or created) after a user gesture on the page. https://developer.chrome.com/blog/autoplay/#web_audio","warning: The AudioContext was not allowed to start. It must be resumed (or created) after a user gesture on the page. https://developer.chrome.com/blog/autoplay/#web_audio","warning: The AudioContext is \"suspended\". Invoke Tone.start() from a user action to start the audio.","warning: The AudioContext is \"suspended\". Invoke Tone.start() from a user action to start the audio."],"dom":"🎹 Tone.js Piano\nOne chromatic octave: C4 → C5\nAudio ready — play!\nA\nC4\nW\nC#4\nS\nD4\nE\nD#4\nD\nE4\nF\nF4\nT\nF#4\nG\nG4\nY\nG#4\nH\nA4\nU\nA#4\nJ\nB4\nK\nC5\nCOMPUTER KEYBOARD MAPPING\nKey\tNote\tKey\tNote\nA\tC4\tW\tC#4\nS\tD4\tE\tD#4\nD\tE4\tF\tF4\nT\tF#4\tG\tG4\nY\tG#4\tH\tA4\nU\tA#4\tJ\tB4\nK\tC5\nHold a screen key or computer key to sustain. Release to let the note fade out. Works with at least 3 notes at once.","images":"attached"}

toolResult

Frame 1, +0ms

[Browser image supplied to model]

{"console":["warning: An iframe which has both allow-scripts and allow-same-origin for its sandbox attribute can escape its sandboxing.","log: %c * Tone.js v14.8.49 * background: #000; color: #fff","error: Creating a worker from 'blob:http://127.0.0.1:45817/30fdabd1-cac5-4819-8cc0-a734a1301afb' violates the following Content Security Policy directive: \"worker-src 'none'\". The action has been blocked.","warning: The AudioContext was not allowed to start. It must be resumed (or created) after a user gesture on the page. https://developer.chrome.com/blog/autoplay/#web_audio","warning: The AudioContext was not allowed to start. It must be resumed (or created) after a user gesture on the page. https://developer.chrome.com/blog/autoplay/#web_audio","warning: The AudioContext was not allowed to start. It must be resumed (or created) after a user gesture on the page. https://developer.chrome.com/blog/autoplay/#web_audio","warning: The AudioContext was not allowed to start. It must be resumed (or created) after a user gesture on the page. https://developer.chrome.com/blog/autoplay/#web_audio","warning: The AudioContext was not allowed to start. It must be resumed (or created) after a user gesture on the page. https://developer.chrome.com/blog/autoplay/#web_audio","warning: The AudioContext was not allowed to start. It must be resumed (or created) after a user gesture on the page. https://developer.chrome.com/blog/autoplay/#web_audio","warning: The AudioContext was not allowed to start. It must be resumed (or created) after a user gesture on the page. https://developer.chrome.com/blog/autoplay/#web_audio","warning: The AudioContext is \"suspended\". Invoke Tone.start() from a user action to start the audio.","warning: The AudioContext is \"suspended\". Invoke Tone.start() from a user action to start the audio."],"dom":"🎹 Tone.js Piano\nOne chromatic octave: C4 → C5\nAudio ready — play!\nA\nC4\nW\nC#4\nS\nD4\nE\nD#4\nD\nE4\nF\nF4\nT\nF#4\nG\nG4\nY\nG#4\nH\nA4\nU\nA#4\nJ\nB4\nK\nC5\nCOMPUTER KEYBOARD MAPPING\nKey\tNote\tKey\tNote\nA\tC4\tW\tC#4\nS\tD4\tE\tD#4\nD\tE4\tF\tF4\nT\tF#4\tG\tG4\nY\tG#4\tH\tA4\nU\tA#4\tJ\tB4\nK\tC5\nHold a screen key or computer key to sustain. Release to let the note fade out. Works with at least 3 notes at once.","images":"attached"}

toolResult

Frame 1, +0ms

[Browser image supplied to model]

{"console":["warning: An iframe which has both allow-scripts and allow-same-origin for its sandbox attribute can escape its sandboxing.","log: %c * Tone.js v14.8.49 * background: #000; color: #fff","error: Creating a worker from 'blob:http://127.0.0.1:45817/30fdabd1-cac5-4819-8cc0-a734a1301afb' violates the following Content Security Policy directive: \"worker-src 'none'\". The action has been blocked.","warning: The AudioContext was not allowed to start. It must be resumed (or created) after a user gesture on the page. https://developer.chrome.com/blog/autoplay/#web_audio","warning: The AudioContext was not allowed to start. It must be resumed (or created) after a user gesture on the page. https://developer.chrome.com/blog/autoplay/#web_audio","warning: The AudioContext was not allowed to start. It must be resumed (or created) after a user gesture on the page. https://developer.chrome.com/blog/autoplay/#web_audio","warning: The AudioContext was not allowed to start. It must be resumed (or created) after a user gesture on the page. https://developer.chrome.com/blog/autoplay/#web_audio","warning: The AudioContext was not allowed to start. It must be resumed (or created) after a user gesture on the page. https://developer.chrome.com/blog/autoplay/#web_audio","warning: The AudioContext was not allowed to start. It must be resumed (or created) after a user gesture on the page. https://developer.chrome.com/blog/autoplay/#web_audio","warning: The AudioContext was not allowed to start. It must be resumed (or created) after a user gesture on the page. https://developer.chrome.com/blog/autoplay/#web_audio","warning: The AudioContext is \"suspended\". Invoke Tone.start() from a user action to start the audio.","warning: The AudioContext is \"suspended\". Invoke Tone.start() from a user action to start the audio."],"dom":"🎹 Tone.js Piano\nOne chromatic octave: C4 → C5\nAudio ready — play!\nA\nC4\nW\nC#4\nS\nD4\nE\nD#4\nD\nE4\nF\nF4\nT\nF#4\nG\nG4\nY\nG#4\nH\nA4\nU\nA#4\nJ\nB4\nK\nC5\nCOMPUTER KEYBOARD MAPPING\nKey\tNote\tKey\tNote\nA\tC4\tW\tC#4\nS\tD4\tE\tD#4\nD\tE4\tF\tF4\nT\tF#4\tG\tG4\nY\tG#4\tH\tA4\nU\tA#4\tJ\tB4\nK\tC5\nHold a screen key or computer key to sustain. Release to let the note fade out. Works with at least 3 notes at once.","images":"attached"}

assistant

The `key` action with text seems to have sent keypresses but the keys were released immediately (no held highlight visible). The status shows "Audio ready — play!" so audio activated. Let me test holding keys — the browser `key` action may press and release. Let me check held state by using a screenshot while holding. The tool's `key` action likely does press+release. To verify highlighting, I can use `drag` on a key, or check via inspect after pointerdown without pointerup. Let me try clicking (pointerdown) on a key and inspecting before release — but `click` does down+up. Let me use `drag` from one key to another, or better: use `key` with a key that stays? Actually let me test with a drag on the keyboard to hold a key, then screenshot mid-drag isn't possible. Alternative: verify via JS evaluation — but the browser tool doesn't have an eval action. I can verify highlighting by using `drag` action which does pointerdown, move, pointerup — the screenshot at end shows released state. Hmm. Alternative: temporarily the `motion` action? Let me just do a drag from a white key to outside the keyboard (to test release-outside behavior) and check console. Also test key repeat: hold "a" — the `key` action sends a single press/release. Actually, maybe I can verify held state by taking a screenshot during a drag... The tool returns one frame per action. Let me try `drag` from key C4 to somewhere and see the final frame — keys should be unhighlighted after release, which tests release behavior. To test the held highlight, I could add a temporary test: use `key` action with text "a" — does it hold? The screenshots show no highlight, so it's press+release quickly. Let me instead verify programmatically by checking the DOM after a pointerdown without pointerup. The `drag` action: pointerdown at start, moves, pointerup at end. The returned frame is after completion. Hmm, maybe I can use the `scroll` or other... Actually, a simpler approach: I trust the code logic but let me at least verify with a screenshot mid-interaction. Some browser tools support `motion` which captures frames over time. Let me try `drag` with a long path and see if intermediate frames show held state — the result shows "Frame 1" only. Alternative: I can write a small test in the page itself? No — better: use the `key` action but check if it holds keys. Let me try pressing key "a" and then immediately inspecting — the inspect action after key showed no highlight, meaning key was released. Let me try a different approach: use drag from on top of a key to another location, and take screenshot — after drag ends, pointer is released. But during drag with pointer capture, moving off the key keeps the note held until pointerup. The final frame shows released. OK — to verify held highlighting visually, I can temporarily modify the page? No, better: use the browser's ability — maybe `key` action with text like "a" holds it? Let me test: press "a" via key action, then take screenshot in the SAME action? Not possible. Actually, let me check if the `key` action supports holding — try `key` with text "a" then `screenshot` immediately. The key action probably dispatches keydown+keyup. The screenshot after showed no highlight. Alternative verification: add a tiny debug hook — expose `window.__pianoTest` in the page that lets me check active notes. But I can't eval JS with these tools... Actually maybe I can: the `inspect` action returns DOM. I could add temporary instrumentation to the page that displays active note count in the DOM (e.g., update a counter element on noteOn/noteOff). That's actually a reasonable permanent feature too — but let me keep it simple: I'll verify via a drag test and a temporary counter. Actually, a cleaner approach: use `drag` to press a key and drag outside the keyboard, then the pointerup happens outside — tests the "release outside" path. And for held highlight, I can use the `motion` action? Let me check what `motion` does — probably captures motion frames. Let me try `drag` from key C4 (x≈657,y≈380) to outside (x≈600, y≈600) and screenshot. Also test keyboard: key "w" (black key C#4). Let me also add a small "active notes" indicator to the page for verification — actually that changes the artifact. It's fine to add a subtle status update showing last played note; that's a nice UX touch and helps verification. Let me add: statusEl shows "Playing: C4" etc. Hmm, but status shows "Audio ready". I could add a separate small element showing currently held notes. That's genuinely useful. Let me add it.

→ edit {"path":"/tmp/job-nPdYBv/index.html","oldText":" .hint { color: var(--muted); font-size: 0.82rem; margin-top: 18px; text-align: center; }",
toolResult

Successfully replaced 1 block(s) in /tmp/job-nPdYBv/index.html.

assistant
→ edit {"path":"/tmp/job-nPdYBv/index.html","edits":[{"oldText":" <div class=\"hint\">Hold a screen key or computer key to sustain. Release to let
toolResult

Successfully replaced 4 block(s) in /tmp/job-nPdYBv/index.html.

assistant
→ browser {"action":"reload"}
→ browser {"action":"drag","x":657,"y":380,"toX":657,"toY":380}
toolResult

Frame 1, +0ms

[Browser image supplied to model]

{"console":["warning: An iframe which has both allow-scripts and allow-same-origin for its sandbox attribute can escape its sandboxing.","log: %c * Tone.js v14.8.49 * background: #000; color: #fff","error: Creating a worker from 'blob:http://127.0.0.1:36105/7a76afee-6ae8-4edc-83cc-4e91148ff7b0' violates the following Content Security Policy directive: \"worker-src 'none'\". The action has been blocked.","warning: The AudioContext was not allowed to start. It must be resumed (or created) after a user gesture on the page. https://developer.chrome.com/blog/autoplay/#web_audio","warning: The AudioContext was not allowed to start. It must be resumed (or created) after a user gesture on the page. https://developer.chrome.com/blog/autoplay/#web_audio","warning: The AudioContext was not allowed to start. It must be resumed (or created) after a user gesture on the page. https://developer.chrome.com/blog/autoplay/#web_audio","warning: The AudioContext was not allowed to start. It must be resumed (or created) after a user gesture on the page. https://developer.chrome.com/blog/autoplay/#web_audio","warning: The AudioContext was not allowed to start. It must be resumed (or created) after a user gesture on the page. https://developer.chrome.com/blog/autoplay/#web_audio","warning: The AudioContext was not allowed to start. It must be resumed (or created) after a user gesture on the page. https://developer.chrome.com/blog/autoplay/#web_audio","warning: The AudioContext was not allowed to start. It must be resumed (or created) after a user gesture on the page. https://developer.chrome.com/blog/autoplay/#web_audio"],"dom":"🎹 Tone.js Piano\nOne chromatic octave: C4 → C5\nClick anywhere or press a key to enable audio\nA\nC4\nW\nC#4\nS\nD4\nE\nD#4\nD\nE4\nF\nF4\nT\nF#4\nG\nG4\nY\nG#4\nH\nA4\nU\nA#4\nJ\nB4\nK\nC5\nCOMPUTER KEYBOARD MAPPING\nKey\tNote\tKey\tNote\nA\tC4\tW\tC#4\nS\tD4\tE\tD#4\nD\tE4\tF\tF4\nT\tF#4\tG\tG4\nY\tG#4\tH\tA4\nU\tA#4\tJ\tB4\nK\tC5\nHeld: —\nHold a screen key or computer key to sustain. Release to let the note fade out. Works with at least 3 notes at once.","images":"attached"}

toolResult

Frame 1, +0ms

[Browser image supplied to model]

{"console":["warning: An iframe which has both allow-scripts and allow-same-origin for its sandbox attribute can escape its sandboxing.","log: %c * Tone.js v14.8.49 * background: #000; color: #fff","error: Creating a worker from 'blob:http://127.0.0.1:36105/7a76afee-6ae8-4edc-83cc-4e91148ff7b0' violates the following Content Security Policy directive: \"worker-src 'none'\". The action has been blocked.","warning: The AudioContext was not allowed to start. It must be resumed (or created) after a user gesture on the page. https://developer.chrome.com/blog/autoplay/#web_audio","warning: The AudioContext was not allowed to start. It must be resumed (or created) after a user gesture on the page. https://developer.chrome.com/blog/autoplay/#web_audio","warning: The AudioContext was not allowed to start. It must be resumed (or created) after a user gesture on the page. https://developer.chrome.com/blog/autoplay/#web_audio","warning: The AudioContext was not allowed to start. It must be resumed (or created) after a user gesture on the page. https://developer.chrome.com/blog/autoplay/#web_audio","warning: The AudioContext was not allowed to start. It must be resumed (or created) after a user gesture on the page. https://developer.chrome.com/blog/autoplay/#web_audio","warning: The AudioContext was not allowed to start. It must be resumed (or created) after a user gesture on the page. https://developer.chrome.com/blog/autoplay/#web_audio","warning: The AudioContext was not allowed to start. It must be resumed (or created) after a user gesture on the page. https://developer.chrome.com/blog/autoplay/#web_audio","warning: The AudioContext is \"suspended\". Invoke Tone.start() from a user action to start the audio.","warning: The AudioContext is \"suspended\". Invoke Tone.start() from a user action to start the audio."],"dom":"🎹 Tone.js Piano\nOne chromatic octave: C4 → C5\nAudio ready — play!\nA\nC4\nW\nC#4\nS\nD4\nE\nD#4\nD\nE4\nF\nF4\nT\nF#4\nG\nG4\nY\nG#4\nH\nA4\nU\nA#4\nJ\nB4\nK\nC5\nCOMPUTER KEYBOARD MAPPING\nKey\tNote\tKey\tNote\nA\tC4\tW\tC#4\nS\tD4\tE\tD#4\nD\tE4\tF\tF4\nT\tF#4\tG\tG4\nY\tG#4\tH\tA4\nU\tA#4\tJ\tB4\nK\tC5\nHeld: —\nHold a screen key or computer key to sustain. Release to let the note fade out. Works with at least 3 notes at once.","images":"attached"}

assistant

The drag ended with "Held: —" and the A4 key shows a slight highlight in the screenshot (the drag ended on A4 key at 657,380 — actually the drag was from (657,380) to (657,380), a zero-distance drag, which pressed and released). The screenshot shows A4 slightly highlighted — that's the tail of the press. The DOM shows "Held: —" meaning release worked. Now I need to test the held state. The `key` action sends press+release. Let me check if `key` action can hold — maybe I should test with a key press and screenshot in the same call sequence. The problem: each action is separate and the key is released. Let me try the `motion` action — maybe it captures frames during a drag, showing the held state mid-drag.

→ browser {"action":"motion","x":657,"y":380,"toX":900,"toY":500}
toolResult

Frame 1, +0ms

[Browser image supplied to model]

Frame 2, +556ms

[Browser image supplied to model]

Frame 3, +1091ms

[Browser image supplied to model]

Frame 4, +1654ms

[Browser image supplied to model]

{"console":["warning: An iframe which has both allow-scripts and allow-same-origin for its sandbox attribute can escape its sandboxing.","log: %c * Tone.js v14.8.49 * background: #000; color: #fff","error: Creating a worker from 'blob:http://127.0.0.1:36105/7a76afee-6ae8-4edc-83cc-4e91148ff7b0' violates the following Content Security Policy directive: \"worker-src 'none'\". The action has been blocked.","warning: The AudioContext was not allowed to start. It must be resumed (or created) after a user gesture on the page. https://developer.chrome.com/blog/autoplay/#web_audio","warning: The AudioContext was not allowed to start. It must be resumed (or created) after a user gesture on the page. https://developer.chrome.com/blog/autoplay/#web_audio","warning: The AudioContext was not allowed to start. It must be resumed (or created) after a user gesture on the page. https://developer.chrome.com/blog/autoplay/#web_audio","warning: The AudioContext was not allowed to start. It must be resumed (or created) after a user gesture on the page. https://developer.chrome.com/blog/autoplay/#web_audio","warning: The AudioContext was not allowed to start. It must be resumed (or created) after a user gesture on the page. https://developer.chrome.com/blog/autoplay/#web_audio","warning: The AudioContext was not allowed to start. It must be resumed (or created) after a user gesture on the page. https://developer.chrome.com/blog/autoplay/#web_audio","warning: The AudioContext was not allowed to start. It must be resumed (or created) after a user gesture on the page. https://developer.chrome.com/blog/autoplay/#web_audio","warning: The AudioContext is \"suspended\". Invoke Tone.start() from a user action to start the audio.","warning: The AudioContext is \"suspended\". Invoke Tone.start() from a user action to start the audio."],"dom":"🎹 Tone.js Piano\nOne chromatic octave: C4 → C5\nAudio ready — play!\nA\nC4\nW\nC#4\nS\nD4\nE\nD#4\nD\nE4\nF\nF4\nT\nF#4\nG\nG4\nY\nG#4\nH\nA4\nU\nA#4\nJ\nB4\nK\nC5\nCOMPUTER KEYBOARD MAPPING\nKey\tNote\tKey\tNote\nA\tC4\tW\tC#4\nS\tD4\tE\tD#4\nD\tE4\tF\tF4\nT\tF#4\tG\tG4\nY\tG#4\tH\tA4\nU\tA#4\tJ\tB4\nK\tC5\nHeld: —\nHold a screen key or computer key to sustain. Release to let the note fade out. Works with at least 3 notes at once.","images":"attached"}

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