Accompaniment data generating apparatus

A non-transitory computer-readable medium storing an accompaniment data generation program that is executed by a computer, and is applied to an accompaniment data generating apparatus including a storage device for storing a set of phrase waveform data having a plurality of concurrent constituent notes which form a chord, the program comprising the steps of:

• a separating step of separating the set of phrase waveform data having the chord constituent notes into concurrent sets of phrase waveform data formed of a set of phrase waveform data having at least one of the chord constituent notes and a set of phrase waveform data which does not have the at least one of the chord constituent notes but has different one of the chord constituent notes;
• an obtaining step of obtaining chord information which identifies chord type and chord root;
• and
• a chord note phrase generating step of pitch-shifting one or more of the separated phrase waveform data sets in accordance with at least the chord type identified on the basis of the obtained chord information, and combining the separated phrase waveform data sets including the pitch-shifted phrase waveform data to generate, as accompaniment data, a set of waveform data indicative of a chord note phrase corresponding to the chord root and the chord type identified on the basis of the obtained chord information.