The present invention enables a user to select and control on an electronic musical instrument, just by selecting a registration data set, the mode for generating musical tones, automatic performance tones, and voice signals at once. More specifically, in a ROM 23 and external storage device 25 there are stored a plurality of registration data sets. Each registration data set includes a plurality of control parameters for controlling mode in which musical tones are generated such as tone color and loudness, MIDI song specifying data for specifying MIDI song data (automatic performance data), and audio song specifying data for specifying audio song data (voice data). By selecting a registration data set by an operation of setting operators 12, the mode for generating musical tones is controlled in accordance with the control parameters with MIDI song data and audio song data being simultaneously reproduced in accordance with the selected registration data set.