| 摘要 |
According to the invention, a new sounding operation changes a solo being played, and various ways of sounding musical tones are permitted by a selection of whether or not a chord being played is to be changed. In response to an instruction for sounding a musical tone, chord tone data is provided together with tone data indicating a single key number, to thereby determine whether or not the chord is to be detected, and whether or not chord tone data is be output. Accordingly, ways of sounding musical tones, such as changing a chord being played together with a solo being played, or not changing a chord being played but changing only the solo being played.
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