Kawai ES920 Owner's Manual page 53

4. Selecting the audio recorder file format
Press the or VALUE buttons to select the desired audio
recorder file format (MP3 or WAV).
5. Starting the audio recorder
Press a key on the keyboard, or press the PLAY/STOP button.
or
The LED indicators for the (REC) and PLAY/STOP buttons
will turn on, the selected audio file will begin to play, and
overdubbing will start.
* The name of the selected audio file will be used as the default name for
the overdubbed audio file.
* Saved files are limited to a maximum name length of 11 characters.
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