{"tonagi":{"app":"material curado","kind":"sequence","schema":1,"createdAt":"2026-10-04T09:00:00Z"},"content":{"id":"91077C44-14CF-5937-83F8-5CD5121EDA6F","steps":[{"note":"Tune C4 first. Quarter-comma meantone: every fifth is narrowed by the same amount, so the major thirds (C–E, G–B…) come out pure. Match the beat speed you hear.","rest":false,"notes":[60],"tuningId":"meantone14","tonicIndex":0,"durationUnit":"free","durationValue":1},{"rest":false,"notes":[60,67],"tuningId":"meantone14","tonicIndex":0,"durationUnit":"free","durationValue":1},{"rest":false,"notes":[62,67],"tuningId":"meantone14","tonicIndex":0,"durationUnit":"free","durationValue":1},{"rest":false,"notes":[62,69],"tuningId":"meantone14","tonicIndex":0,"durationUnit":"free","durationValue":1},{"rest":false,"notes":[64,69],"tuningId":"meantone14","tonicIndex":0,"durationUnit":"free","durationValue":1},{"note":"Check: C–E must be a pure, beatless third. If not, spread the error over the four fifths.","rest":false,"notes":[60,64],"tuningId":"meantone14","tonicIndex":0,"durationUnit":"free","durationValue":1},{"rest":false,"notes":[64,71],"tuningId":"meantone14","tonicIndex":0,"durationUnit":"free","durationValue":1},{"note":"Check: G–B, another pure third.","rest":false,"notes":[67,71],"tuningId":"meantone14","tonicIndex":0,"durationUnit":"free","durationValue":1}],"title":"Harpsichord · Quarter-comma meantone bearing — part 1 of 2","embeddedTunings":[]}}