| 摘要 |
A performance data editing apparatus wherein chords in performance data of a musical tune applied from an external memory element or performance apparatus are detected and normalized into a predetermined tone scale on a basis of their respective types and roots, the musical tune including a plurality of performance parts at least one of which represents the chords indicative of a musical progression having a performance pattern, and wherein the normalized chords are converted on a basis of chords designated to be performed-for production of a desired accompaniment data, thereby to produce edited chords indicative of a progression of the designated chords in the performance pattern.
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