Arpeggiator pad · gpt-6.1-terra
Output generated Cost / run $0.0748 Runtime 63.4s
Prompt for this run
Build a pentatonic synthesizer pad grid and arpeggiator 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: - Show ten labeled pads for two octaves of a C-major pentatonic scale. Clicking a pad plays its note through a synthesized voice with reverb and visibly marks the active pad. - Provide a separate sequence-selection toggle for each pad. Start with a nonempty selection. The arpeggiator repeatedly plays selected notes in ascending pitch order, one note per eighth-note step. - Provide Play, Stop, and a tempo control from 60 to 180 BPM. Tempo and selection changes take effect during playback. An empty selection produces no new notes. - Activate audio through a user gesture. Stop prevents new arpeggiator notes, allowing existing release and reverb tails to decay. Repeated Play must not create overlapping schedulers. - Synthesize every sound; do not load audio files. Verify: Click a pad and check its active feedback. Start the arpeggiator, change one selected note and the tempo, and check that the visible sequence responds. Stop playback and inspect the console for audio-initialization or scheduling errors.
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
METRICS
Transcript · 25 messages
Build a pentatonic synthesizer pad grid and arpeggiator 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: - Show ten labeled pads for two octaves of a C-major pentatonic scale. Clicking a pad plays its note through a synthesized voice with reverb and visibly marks the active pad. - Provide a separate sequence-selection toggle for each pad. Start with a nonempty selection. The arpeggiator repeatedly plays selected notes in ascending pitch order, one note per eighth-note step. - Provide Play, Stop, and a tempo control from 60 to 180 BPM. Tempo and selection changes take effect during playback. An empty selection produces no new notes. - Activate audio through a user gesture. Stop prevents new arpeggiator notes, allowing existing release and reverb tails to decay. Repeated Play must not create overlapping schedulers. - Synthesize every sound; do not load audio files. Verify: Click a pad and check its active feedback. Start the arpeggiator, change one selected note and the tempo, and check that the visible sequence responds. Stop playback and inspect the console for audio-initialization or scheduling errors.
thinking
**Inspecting necessary files** I realize I need to build something, but first, I should check or inspect the files involved. It's crucial to understand what resources or components are at play before proceeding. I can't skip this step, as inspecting the files will help clarify what exactly needs to be worked on. Once I've done that, I'll be in a better position to build effectively. Let's make sure I'm thorough here!
{"command":"ls -la","timeout":10}total 356 drwx------ 3 node node 4096 Oct 26 23:42 . drwxrwxrwt 8 root root 4096 Oct 26 23:42 .. drwxr-xr-x 3 node node 4096 Oct 26 23:42 .home -rw-r--r-- 1 node node 349169 Oct 26 23:42 tone.min.js
thinking
**Developing a polished UI** I need to create a polished UI for a music workstation with a dark navy and purple theme. It should include elements like a header, hero area, and a grid layout with two rows of five controls. I'll ensure it's functional and include robust Tone scheduling. I plan to initialize gestures and create both PolySynth and Reverb features. Tone.Reverb might generate asynchronously, and I'll explore how to connect synth and reverb to the destination effectively. It's essential to manage active feedback visually, especially for touch interactions.**Updating step increments** I’m working on implementing step increments for note updates. When the selection changes, it needs to take effect in the next step. I’ll use a note cursor to increment the selection index with respect to the length using modulo, which seems like a good approach. I also need to make sure to update the state properly. Plus, I’ll have to verify it in the browser and then write the file. It feels like a solid plan!
index.html (16542 bytes)Successfully wrote to index.html
thinking
{"action":"inspect","x":0,"y":0,"toX":0,"toY":0,"text":"","delta":0}Frame 1, +0ms
[Browser image supplied to model]
{"console":["log: %c * Tone.js v14.8.49 * background: #000; color: #fff","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":"monochord\n.\nA LITTLE SPACE TO PLAY\nYOUR MUSICAL PLAYGROUND\nFind your flow.\n\nA handful of notes, endless possibilities. Play a little.\n\n♪\nCURRENT SCALE\nC major pentatonic\n01\nNote pads\n/ Tap to play\nC MAJOR PENTATONIC · 2 OCTAVES\nLOWER OCTAVE\n01 — 05\n01 / NOTE\n⌁\nC4\nTap to play\n✓\n02 / NOTE\n⌁\nD4\nTap to play\n✓\n03 / NOTE\n⌁\nE4\nTap to play\n✓\n04 / NOTE\n⌁\nG4\nTap to play\n✓\n05 / NOTE\n⌁\nA4\nTap to play\n✓\nUPPER OCTAVE\n06 — 10\n06 / NOTE\n⌁\nC5\nTap to play\n✓\n07 / NOTE\n⌁\nD5\nTap to play\n✓\n08 / NOTE\n⌁\nE5\nTap to play\n✓\n09 / NOTE\n⌁\nG5\nTap to play\n✓\n10 / NOTE\n⌁\nA5\nTap to play\n✓\n✓\nSelect notes to add them to your sequence\nClick anywhere on a pad to play its note\n02\nArpeggiator\n/ Make it move\nREADY TO PLAY\nTRANSPORT\n▶\nPlay\n■\nStop\nTEMPO\n110BPM\n60\n180\nYOUR SEQUENCE · 5 SELECTED\nC4\n›\nE4\n›\nG4\n›\nA4\n›\nC5\nMADE FOR MOMENTS OF PLAY\nTake a breath. Make a little music.","images":"attached"}
thinking
{"action":"click","x":150,"y":444,"toX":0,"toY":0,"text":"","delta":0}Frame 1, +0ms
[Browser image supplied to model]
{"console":["log: %c * Tone.js v14.8.49 * background: #000; color: #fff","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":"monochord\n.\nA LITTLE SPACE TO PLAY\nYOUR MUSICAL PLAYGROUND\nFind your flow.\n\nA handful of notes, endless possibilities. Play a little.\n\n♪\nCURRENT SCALE\nC major pentatonic\n01\nNote pads\n/ Tap to play\nC MAJOR PENTATONIC · 2 OCTAVES\nLOWER OCTAVE\n01 — 05\n01 / NOTE\n⌁\nC4\nTap to play\n✓\n02 / NOTE\n⌁\nD4\nTap to play\n✓\n03 / NOTE\n⌁\nE4\nTap to play\n✓\n04 / NOTE\n⌁\nG4\nTap to play\n✓\n05 / NOTE\n⌁\nA4\nTap to play\n✓\nUPPER OCTAVE\n06 — 10\n06 / NOTE\n⌁\nC5\nTap to play\n✓\n07 / NOTE\n⌁\nD5\nTap to play\n✓\n08 / NOTE\n⌁\nE5\nTap to play\n✓\n09 / NOTE\n⌁\nG5\nTap to play\n✓\n10 / NOTE\n⌁\nA5\nTap to play\n✓\n✓\nSelect notes to add them to your sequence\nClick anywhere on a pad to play its note\n02\nArpeggiator\n/ Make it move\nREADY TO PLAY\nTRANSPORT\n▶\nPlay\n■\nStop\nTEMPO\n110BPM\n60\n180\nYOUR SEQUENCE · 5 SELECTED\nC4\n›\nE4\n›\nG4\n›\nA4\n›\nC5\nMADE FOR MOMENTS OF PLAY\nTake a breath. Make a little music.","images":"attached"}
thinking
{"action":"scroll","x":1045,"y":687,"toX":0,"toY":0,"text":"","delta":501}Frame 1, +0ms
[Browser image supplied to model]
{"console":["log: %c * Tone.js v14.8.49 * background: #000; color: #fff","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":"monochord\n.\nA LITTLE SPACE TO PLAY\nYOUR MUSICAL PLAYGROUND\nFind your flow.\n\nA handful of notes, endless possibilities. Play a little.\n\n♪\nCURRENT SCALE\nC major pentatonic\n01\nNote pads\n/ Tap to play\nC MAJOR PENTATONIC · 2 OCTAVES\nLOWER OCTAVE\n01 — 05\n01 / NOTE\n⌁\nC4\nTap to play\n✓\n02 / NOTE\n⌁\nD4\nTap to play\n✓\n03 / NOTE\n⌁\nE4\nTap to play\n✓\n04 / NOTE\n⌁\nG4\nTap to play\n✓\n05 / NOTE\n⌁\nA4\nTap to play\n✓\nUPPER OCTAVE\n06 — 10\n06 / NOTE\n⌁\nC5\nTap to play\n✓\n07 / NOTE\n⌁\nD5\nTap to play\n✓\n08 / NOTE\n⌁\nE5\nTap to play\n✓\n09 / NOTE\n⌁\nG5\nTap to play\n✓\n10 / NOTE\n⌁\nA5\nTap to play\n✓\n✓\nSelect notes to add them to your sequence\nClick anywhere on a pad to play its note\n02\nArpeggiator\n/ Make it move\nREADY TO PLAY\nTRANSPORT\n▶\nPlay\n■\nStop\nTEMPO\n110BPM\n60\n180\nYOUR SEQUENCE · 5 SELECTED\nC4\n›\nE4\n›\nG4\n›\nA4\n›\nC5\nMADE FOR MOMENTS OF PLAY\nTake a breath. Make a little music.","images":"attached"}
thinking
{"action":"screenshot","x":0,"y":0,"toX":0,"toY":0,"text":"","delta":0}Frame 1, +0ms
[Browser image supplied to model]
{"console":["log: %c * Tone.js v14.8.49 * background: #000; color: #fff","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":"monochord\n.\nA LITTLE SPACE TO PLAY\nYOUR MUSICAL PLAYGROUND\nFind your flow.\n\nA handful of notes, endless possibilities. Play a little.\n\n♪\nCURRENT SCALE\nC major pentatonic\n01\nNote pads\n/ Tap to play\nC MAJOR PENTATONIC · 2 OCTAVES\nLOWER OCTAVE\n01 — 05\n01 / NOTE\n⌁\nC4\nTap to play\n✓\n02 / NOTE\n⌁\nD4\nTap to play\n✓\n03 / NOTE\n⌁\nE4\nTap to play\n✓\n04 / NOTE\n⌁\nG4\nTap to play\n✓\n05 / NOTE\n⌁\nA4\nTap to play\n✓\nUPPER OCTAVE\n06 — 10\n06 / NOTE\n⌁\nC5\nTap to play\n✓\n07 / NOTE\n⌁\nD5\nTap to play\n✓\n08 / NOTE\n⌁\nE5\nTap to play\n✓\n09 / NOTE\n⌁\nG5\nTap to play\n✓\n10 / NOTE\n⌁\nA5\nTap to play\n✓\n✓\nSelect notes to add them to your sequence\nClick anywhere on a pad to play its note\n02\nArpeggiator\n/ Make it move\nREADY TO PLAY\nTRANSPORT\n▶\nPlay\n■\nStop\nTEMPO\n110BPM\n60\n180\nYOUR SEQUENCE · 5 SELECTED\nC4\n›\nE4\n›\nG4\n›\nA4\n›\nC5\nMADE FOR MOMENTS OF PLAY\nTake a breath. Make a little music.","images":"attached"}
{"action":"click","x":139,"y":654,"toX":0,"toY":0,"text":"","delta":0}Frame 1, +0ms
[Browser image supplied to model]
{"console":["log: %c * Tone.js v14.8.49 * background: #000; color: #fff","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":"monochord\n.\nA LITTLE SPACE TO PLAY\nYOUR MUSICAL PLAYGROUND\nFind your flow.\n\nA handful of notes, endless possibilities. Play a little.\n\n♪\nCURRENT SCALE\nC major pentatonic\n01\nNote pads\n/ Tap to play\nC MAJOR PENTATONIC · 2 OCTAVES\nLOWER OCTAVE\n01 — 05\n01 / NOTE\n⌁\nC4\nTap to play\n✓\n02 / NOTE\n⌁\nD4\nTap to play\n✓\n03 / NOTE\n⌁\nE4\nTap to play\n✓\n04 / NOTE\n⌁\nG4\nTap to play\n✓\n05 / NOTE\n⌁\nA4\nTap to play\n✓\nUPPER OCTAVE\n06 — 10\n06 / NOTE\n⌁\nC5\nTap to play\n✓\n07 / NOTE\n⌁\nD5\nTap to play\n✓\n08 / NOTE\n⌁\nE5\nTap to play\n✓\n09 / NOTE\n⌁\nG5\nTap to play\n✓\n10 / NOTE\n⌁\nA5\nTap to play\n✓\n✓\nSelect notes to add them to your sequence\nClick anywhere on a pad to play its note\n02\nArpeggiator\n/ Make it move\nPLAYING\nTRANSPORT\n▶\nPlay\n■\nStop\nTEMPO\n110BPM\n60\n180\nYOUR SEQUENCE · 5 SELECTED\nC4\n›\nE4\n›\nG4\n›\nA4\n›\nC5\nMADE FOR MOMENTS OF PLAY\nTake a breath. Make a little music.","images":"attached"}
{"action":"click","x":468,"y":251,"toX":0,"toY":0,"text":"","delta":0}Frame 1, +0ms
[Browser image supplied to model]
{"console":["log: %c * Tone.js v14.8.49 * background: #000; color: #fff","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":"monochord\n.\nA LITTLE SPACE TO PLAY\nYOUR MUSICAL PLAYGROUND\nFind your flow.\n\nA handful of notes, endless possibilities. Play a little.\n\n♪\nCURRENT SCALE\nC major pentatonic\n01\nNote pads\n/ Tap to play\nC MAJOR PENTATONIC · 2 OCTAVES\nLOWER OCTAVE\n01 — 05\n01 / NOTE\n⌁\nC4\nTap to play\n✓\n02 / NOTE\n⌁\nD4\nTap to play\n✓\n03 / NOTE\n⌁\nE4\nTap to play\n✓\n04 / NOTE\n⌁\nG4\nTap to play\n✓\n05 / NOTE\n⌁\nA4\nTap to play\n✓\nUPPER OCTAVE\n06 — 10\n06 / NOTE\n⌁\nC5\nTap to play\n✓\n07 / NOTE\n⌁\nD5\nTap to play\n✓\n08 / NOTE\n⌁\nE5\nTap to play\n✓\n09 / NOTE\n⌁\nG5\nTap to play\n✓\n10 / NOTE\n⌁\nA5\nTap to play\n✓\n✓\nSelect notes to add them to your sequence\nClick anywhere on a pad to play its note\n02\nArpeggiator\n/ Make it move\nPLAYING\nTRANSPORT\n▶\nPlay\n■\nStop\nTEMPO\n110BPM\n60\n180\nYOUR SEQUENCE · 6 SELECTED\nC4\n›\nD4\n›\nE4\n›\nG4\n›\nA4\n›\nC5\nMADE FOR MOMENTS OF PLAY\nTake a breath. Make a little music.","images":"attached"}
{"action":"click","x":649,"y":654,"toX":0,"toY":0,"text":"","delta":0}Frame 1, +0ms
[Browser image supplied to model]
{"console":["log: %c * Tone.js v14.8.49 * background: #000; color: #fff","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":"monochord\n.\nA LITTLE SPACE TO PLAY\nYOUR MUSICAL PLAYGROUND\nFind your flow.\n\nA handful of notes, endless possibilities. Play a little.\n\n♪\nCURRENT SCALE\nC major pentatonic\n01\nNote pads\n/ Tap to play\nC MAJOR PENTATONIC · 2 OCTAVES\nLOWER OCTAVE\n01 — 05\n01 / NOTE\n⌁\nC4\nTap to play\n✓\n02 / NOTE\n⌁\nD4\nTap to play\n✓\n03 / NOTE\n⌁\nE4\nTap to play\n✓\n04 / NOTE\n⌁\nG4\nTap to play\n✓\n05 / NOTE\n⌁\nA4\nTap to play\n✓\nUPPER OCTAVE\n06 — 10\n06 / NOTE\n⌁\nC5\nTap to play\n✓\n07 / NOTE\n⌁\nD5\nTap to play\n✓\n08 / NOTE\n⌁\nE5\nTap to play\n✓\n09 / NOTE\n⌁\nG5\nTap to play\n✓\n10 / NOTE\n⌁\nA5\nTap to play\n✓\n✓\nSelect notes to add them to your sequence\nClick anywhere on a pad to play its note\n02\nArpeggiator\n/ Make it move\nPLAYING\nTRANSPORT\n▶\nPlay\n■\nStop\nTEMPO\n155BPM\n60\n180\nYOUR SEQUENCE · 6 SELECTED\nC4\n›\nD4\n›\nE4\n›\nG4\n›\nA4\n›\nC5\nMADE FOR MOMENTS OF PLAY\nTake a breath. Make a little music.","images":"attached"}
{"action":"click","x":232,"y":655,"toX":0,"toY":0,"text":"","delta":0}Frame 1, +0ms
[Browser image supplied to model]
{"console":["log: %c * Tone.js v14.8.49 * background: #000; color: #fff","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":"monochord\n.\nA LITTLE SPACE TO PLAY\nYOUR MUSICAL PLAYGROUND\nFind your flow.\n\nA handful of notes, endless possibilities. Play a little.\n\n♪\nCURRENT SCALE\nC major pentatonic\n01\nNote pads\n/ Tap to play\nC MAJOR PENTATONIC · 2 OCTAVES\nLOWER OCTAVE\n01 — 05\n01 / NOTE\n⌁\nC4\nTap to play\n✓\n02 / NOTE\n⌁\nD4\nTap to play\n✓\n03 / NOTE\n⌁\nE4\nTap to play\n✓\n04 / NOTE\n⌁\nG4\nTap to play\n✓\n05 / NOTE\n⌁\nA4\nTap to play\n✓\nUPPER OCTAVE\n06 — 10\n06 / NOTE\n⌁\nC5\nTap to play\n✓\n07 / NOTE\n⌁\nD5\nTap to play\n✓\n08 / NOTE\n⌁\nE5\nTap to play\n✓\n09 / NOTE\n⌁\nG5\nTap to play\n✓\n10 / NOTE\n⌁\nA5\nTap to play\n✓\n✓\nSelect notes to add them to your sequence\nClick anywhere on a pad to play its note\n02\nArpeggiator\n/ Make it move\nREADY TO PLAY\nTRANSPORT\n▶\nPlay\n■\nStop\nTEMPO\n155BPM\n60\n180\nYOUR SEQUENCE · 6 SELECTED\nC4\n›\nD4\n›\nE4\n›\nG4\n›\nA4\n›\nC5\nMADE FOR MOMENTS OF PLAY\nTake a breath. Make a little music.","images":"attached"}
thinking
{"action":"click","x":150,"y":220,"toX":0,"toY":0,"text":"","delta":0}Frame 1, +0ms
[Browser image supplied to model]
{"console":["log: %c * Tone.js v14.8.49 * background: #000; color: #fff","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":"monochord\n.\nA LITTLE SPACE TO PLAY\nYOUR MUSICAL PLAYGROUND\nFind your flow.\n\nA handful of notes, endless possibilities. Play a little.\n\n♪\nCURRENT SCALE\nC major pentatonic\n01\nNote pads\n/ Tap to play\nC MAJOR PENTATONIC · 2 OCTAVES\nLOWER OCTAVE\n01 — 05\n01 / NOTE\n⌁\nC4\nTap to play\n✓\n02 / NOTE\n⌁\nD4\nTap to play\n✓\n03 / NOTE\n⌁\nE4\nTap to play\n✓\n04 / NOTE\n⌁\nG4\nTap to play\n✓\n05 / NOTE\n⌁\nA4\nTap to play\n✓\nUPPER OCTAVE\n06 — 10\n06 / NOTE\n⌁\nC5\nTap to play\n✓\n07 / NOTE\n⌁\nD5\nTap to play\n✓\n08 / NOTE\n⌁\nE5\nTap to play\n✓\n09 / NOTE\n⌁\nG5\nTap to play\n✓\n10 / NOTE\n⌁\nA5\nTap to play\n✓\n✓\nSelect notes to add them to your sequence\nClick anywhere on a pad to play its note\n02\nArpeggiator\n/ Make it move\nREADY TO PLAY\nTRANSPORT\n▶\nPlay\n■\nStop\nTEMPO\n155BPM\n60\n180\nYOUR SEQUENCE · 6 SELECTED\nC4\n›\nD4\n›\nE4\n›\nG4\n›\nA4\n›\nC5\nMADE FOR MOMENTS OF PLAY\nTake a breath. Make a little music.","images":"attached"}
thinking
**Considering warnings for autoplay** Alright, I need to make sure to mention the need for warnings regarding autoplay before the gesture from Tone. I want to avoid errors, especially with unverified audible outputs that may be empty or repeat plays. It’s important to keep everything concise. I’ll focus on refining this to ensure it’s clear and informative for the user without any unnecessary details. This process will help streamline the experience.
Created `index.html`. Checked pad feedback, playback, live selection and tempo changes, and Stop. No scheduling errors appeared; the console showed autoplay warnings before interaction. Audible output, empty selection, and repeated Play were not independently verified.