>>From a piano performance point of view, is this a "legal" use of the > sostenuto? After all, even if the blade could return to rest, there would > still be the ugly noise from all the individual tabs flipping. Exactly. The mystery is why the ugly noise waits for the release of the damper pedal. This usually doesn't come up because the pianist realized in lesson #3 that it generates the noise, and quit doing it. > I tune this piano every week, so next week I could have a chance to make > some adjustments. In every other way (I think), the sostenuto was working > perfectly. It likely is working just fine, but here's what I think may be happening. If the pedal lifts the dampers higher than the sostenuto, releasing the sostenuto may bottom out the tabs at their limit of travel, so they jam the sostenuto blade until the dampers are released. I doubt that the tab springs are holding the blade. Since the sostenuto remains in the piano with the action out in this instrument, you can observe it directly while you diagnose what's happening. Ron N > I would appreciate any advice. > > Jerry Cohen, RPT > NJ Chapter > > >
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