{"tonagi":{"app":"material curado","kind":"routine","schema":1,"createdAt":"2026-09-26T09:00:00Z"},"content":{"id":"DA815278-107A-5843-9F27-6D20FEA0B992","tags":["ear training","temperaments"],"title":"The third the piano doesn't have","author":"Starter collection","blocks":[{"id":"3CB60965-8DEA-534E-A5D1-E54E4AB1B9BA","title":"Listen","layers":[{"kind":"sequence","sequence":{"loop":false,"advance":"manual","meterId":"44","sequence":{"id":"1B208B19-C51F-56B7-BAB3-E2F05734711D","steps":[{"note":"Just third: pure, no beating.","rest":false,"notes":[60,64],"tuningId":"justo","tonicIndex":0,"durationUnit":"free","durationValue":1},{"note":"The piano's third: hear the tremor?","rest":false,"notes":[60,64],"tuningId":"igual","tonicIndex":0,"durationUnit":"free","durationValue":1},{"note":"Pure again. Remember this stillness.","rest":false,"notes":[60,64],"tuningId":"justo","tonicIndex":0,"durationUnit":"free","durationValue":1}],"title":"Major third — listen","embeddedTunings":[]},"guidedBpm":60,"countInBars":0,"durationUnit":"beats","durationValue":4}}],"endRule":{"type":"manual"},"instruction":"Use the arrows (or a pedal) to go back and forth. Just, then equal, then just. Only listen — don't play yet."},{"id":"157F5053-6F46-5840-96DA-051D52AF2838","title":"Find the pure E","layers":[{"kind":"generator","generator":{"note":60,"volume":0.5,"tuningId":"justo","waveform":"organ","tonicIndex":0}},{"kind":"tuner","tuner":{"tuningId":"justo","targetNote":64,"tonicIndex":0}}],"endRule":{"type":"seconds","value":240},"instruction":"The app holds a C. Play or sing the E above it, slowly, without vibrato. Move until the beating stops: that is the centre of the tuner here, about 14¢ below the piano's E."},{"id":"064F9144-62AF-5723-B7C5-AEE29823A563","title":"Now without help","layers":[{"kind":"tuner","tuner":{"tuningId":"justo","targetNote":64,"tonicIndex":0}}],"endRule":{"type":"seconds","value":180},"instruction":"The reference is gone. Play the E you just found, several times, and let the tuner tell you if it stayed pure."}],"createdAt":"2026-09-26T09:00:00Z","description":"Hear the pure major third, then find it yourself against a held C. About 10 minutes.","embeddedTunings":[]}}