The present invention provides an information processing device for generating diverse time series data suited to representing a user's performance tendency. The information processing device comprises: an index identification unit 22 for identifying performance tendency information exhibiting a performance tendency in a music performance by applying a learned model La to observational performance data X indicating the performance by a user; and an information processing unit 23 for generating time series data Z associated with a musical piece in accordance with the performance tendency information.
INFORMATION PROCESSING METHOD AND DEVICE FOR PROCESSING MUSIC PERFORMANCE