| 84 / | HD | MUSIC |
| 1 | DF | INSTRUMENTS {9} |
| * | DD | .~ Automatic {13} |
| 7 | DF | .~.~ Stringed {4} |
| 13 | DF | .~.~.~ Pianos {5} |
| 24 | DF | .~.~.~.~ Pneumatic type {10} |
| 65 | DF | .~.~.~.~.~ Power pneumatics {1} |
| 66 | DF | .~.~.~.~.~.~ Connections to hammers {3} |
| 68 | | .~.~.~.~.~.~.~ To abstract |