Pragmatics: We weighoff a key to help its note function properly. With good geometry, good regulation, and appropriate friction in place, key balancing fine tunes how well a note will play. Key weights, traditionally made of lead, offset weight and friction on the back side of the balancerail to aid the player make music from the front side. Unl...

The field technician plans what can be planned. Selects and brings the tools that can be brought. Then fields what happens in real time with what is available. Well really, the shop technician, designer, manufacturer, mover, and salesperson all must do the same. And this has been a year to confirm these constraints and demonstrate what it takes ...