| http://www.w3.org/ns/prov#value | - The MIDI message to be written in the auto-play memory 212 is auto-play music data stored in a subcode on the customized CD 105A, as will be described in detail later; that is, the message is a MIDI message of auto-play music data selected by the music designation keys 202-6 and data read key 202-7 of the instrument operating section 202.
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