I have had this happen with a couple makes of pianos. We found that there was nothing wrong with the piano except that the strings had all been stressed beyond their elastic limits by the inspired pianist and that they would break during services, at night, whenever - even when no one was near the piano. I softened the hammers, backed off the letoff etc. Nothing helped until I changed all the bass strings and the piano player. It has been three years since either of them broke a bass string. Steve Grattan, Associate Member Lost Chord Clinic Port Huron, MI
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