{"tonagi":{"app":"material curado","kind":"sequence","schema":1,"createdAt":"2026-10-04T09:00:00Z"},"content":{"id":"182525FE-589D-50D4-BF02-7848E22F5F14","steps":[{"note":"The app holds D under every step; play the upper note and tune it until it stops beating. It sounds an octave up so the phone can play it: tune at the octave.","rest":false,"notes":[50,62],"tuningId":"justo","tonicIndex":2,"durationUnit":"free","durationValue":1},{"rest":false,"notes":[50,64],"tuningId":"justo","tonicIndex":2,"durationUnit":"free","durationValue":1},{"note":"Major third: the pure one sits about 14¢ lower than the piano's.","rest":false,"notes":[50,66],"tuningId":"justo","tonicIndex":2,"durationUnit":"free","durationValue":1},{"rest":false,"notes":[50,67],"tuningId":"justo","tonicIndex":2,"durationUnit":"free","durationValue":1},{"note":"Perfect fifth: pure is almost the piano's (2¢ wider). No wobble.","rest":false,"notes":[50,69],"tuningId":"justo","tonicIndex":2,"durationUnit":"free","durationValue":1},{"note":"Major sixth: pure sits about 16¢ low.","rest":false,"notes":[50,71],"tuningId":"justo","tonicIndex":2,"durationUnit":"free","durationValue":1},{"note":"Major seventh over the tonic: low and calm here, unlike the melodic leading tone.","rest":false,"notes":[50,73],"tuningId":"justo","tonicIndex":2,"durationUnit":"free","durationValue":1},{"note":"Octave. Last note. Turn on Mirror and the sequence walks you back down.","rest":false,"notes":[50,74],"tuningId":"justo","tonicIndex":2,"durationUnit":"free","durationValue":1}],"title":"Double bass · D major scale over a drone","embeddedTunings":[]}}