I PROMISED to keep you up to date on the restoration-work in the Music Room. This is an 1850 wing of our house that had been built atop a dubious -- and downright dangerous -- foundation. Crumbling stone had caused the floor to sag, resulting in cracked walls, floor, and ceiling. Now, one month and 4,000 pounds of cement later, the room, for the first time in over 100 years, is secure. The dusty details: