{"tonagi":{"app":"material curado","kind":"routine","schema":1,"createdAt":"2026-09-26T09:00:00Z"},"content":{"id":"BD825DF8-2DA9-56C2-86E3-550F5EB20423","tags":["ear training","temperaments"],"title":"Tuning from inside the chord","author":"Starter collection","blocks":[{"id":"5EEEC045-B5E1-531C-A5C5-BD63EA00C7D0","title":"Listen","layers":[{"kind":"sequence","sequence":{"loop":false,"advance":"manual","meterId":"44","sequence":{"id":"6C3A1D35-95B6-5B05-9A22-C2ADCB5A9DBD","steps":[{"note":"Pure fifth: still.","rest":false,"notes":[48,55],"tuningId":"justo","tonicIndex":0,"durationUnit":"free","durationValue":1},{"note":"Tempered fifth: a slow wobble.","rest":false,"notes":[48,55],"tuningId":"igual","tonicIndex":0,"durationUnit":"free","durationValue":1},{"note":"Just chord on C: the third locks in.","rest":false,"notes":[48,52,55],"tuningId":"justo","tonicIndex":0,"durationUnit":"free","durationValue":1},{"note":"Equal chord: busier.","rest":false,"notes":[48,52,55],"tuningId":"igual","tonicIndex":0,"durationUnit":"free","durationValue":1}],"title":"Fifth and chord — listen","embeddedTunings":[]},"guidedBpm":60,"countInBars":0,"durationUnit":"beats","durationValue":4}}],"endRule":{"type":"manual"},"instruction":"Step through with the arrows. Notice what stops moving in Just: first the fifth, then the whole chord."},{"id":"2F545C6B-86EF-5F7A-A44A-EB278C1395D7","title":"Tune the fifth","layers":[{"kind":"generator","generator":{"note":48,"volume":0.5,"tuningId":"justo","waveform":"organ","tonicIndex":0}},{"kind":"tuner","tuner":{"tuningId":"justo","targetNote":55,"tonicIndex":0}}],"endRule":{"type":"seconds","value":240},"instruction":"The app holds a low C. Play or sing G above it until the slow wobble disappears. Pure fifths sit almost where the piano puts them (2¢ higher)."},{"id":"E8C7CA3E-CDAC-551B-8249-BC560777EFE6","title":"Tune the third","layers":[{"kind":"generator","generator":{"note":48,"volume":0.5,"tuningId":"justo","waveform":"organ","tonicIndex":0}},{"kind":"tuner","tuner":{"tuningId":"justo","targetNote":52,"tonicIndex":0}}],"endRule":{"type":"seconds","value":240},"instruction":"Same C. Now play or sing E. The pure third sits clearly lower than the piano's; lower it until the chord stops beating."}],"createdAt":"2026-09-26T09:00:00Z","description":"Build a C major chord note by note against a held bass: fifth first, then the third. About 12 minutes.","embeddedTunings":[]}}