Studio is an offline, in-browser music-tab editor. Open a bundled starter project or import a MIDI, then view and edit it as a piano roll, an ergonomic bass tab, a 6-string guitar tab, a guitar-chord chart, or a multi-lane drum grid. Long held notes now carry across line breaks, the playback cursor follows the bars, and you can A/B the transcription against a YouTube Song source with an adjustable sync offset. Pure HTML/CSS/JS, no backend, mobile-friendly; your edits save as local .studio.json files.