By implementing this interface, the MidiEventPublisher appears as just another MIDI device to a sequencer which schedules the MIDI commands from a file and passes them to the publisher.
通过实现该接口，MidiEventPublisher看上去像将另一个到音序器的MIDI设备，从文件来调度MIDI命令，并将他们传送到发布者。
MIDI music can be created with a sequencer.
MIDI音乐可以由定序器生成。
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