| 84 / | HD | MUSIC |
| 1 | DF | INSTRUMENTS {9} |
| 600 | DF | .~ Electrical musical tone generation {5} |
| 601 | DF | .~.~ Data storage {6} |
| 602 | DF | .~.~.~ Digital memory circuit (e.g., RAM, ROM, etc.) {9} |
| 609 | DF | .~.~.~.~ Note sequence {1} |
| 610 | DF | .~.~.~.~.~ Accompaniment {3} |
| 611 | ![]() | .~.~.~.~.~.~ Rhythm {1} |
| 612 | DF | .~.~.~.~.~.~.~> Tempo control |