| 84 / | HD | MUSIC |
| 1 | DF | INSTRUMENTS {9} |
| * | | .~ General features {7} |
| 423 R | DF | .~.~> Keyboards {12} |
| 442 | DF | .~.~> Key selectors |
| 443 | DF | .~.~> Chord players {1} |
| 445 | DF | .~.~> Transposers {4} |
| 450 | DF | .~.~> Solo attachments |
| 451 | DF | .~.~> Special or enharmonic scales |
| 452 R | DF | .~.~> Materials {1} |