Abstract: An electronic instrument controller is provided. The device includes: a display screen having a touch panel type of input device; a means configured to establish a connection with an electronic instrument; a means configured to, according to an input operation performed on the display screen, select an operator from an operator group image that is displayed on the display screen as a mockup of an operator group of the electronic instrument; a means configured to, according to an input operation performed on the display screen, switch a selection reception unit from the operator group image to an operator of the electronic instrument; a means configured to receive an operation signal from the electronic instrument; and a means configured to, upon reception of the operation signal, display an indication that an operator from the operator group image corresponding to an operated operator of the electronic instrument is selected.

Abstract: An automatic accompaniment apparatus including a determiner that determines a current position in a music piece in progress, a selector that selects an accompaniment element data set to be used out of a plurality of accompaniment element data sets every time the determined current position arrives at a predetermined switching position, an accompaniment data generator that generates accompaniment data indicating automatic accompaniment based on the selected accompaniment element data set, a calculator that calculates time information corresponding to a time required until the determined current position arrives at a next switching position, and a display controller that controls a display to display arrival advance notice information indicating the calculated time information.

Abstract: An electronic instrument controller is provided. The device includes: a display screen having a touch panel type of input device; a means configured to establish a connection with an electronic instrument; a means configured to, according to an input operation performed on the display screen, select an operator from an operator group image that is displayed on the display screen as a mockup of an operator group of the electronic instrument; a means configured to, according to an input operation performed on the display screen, switch a selection reception unit from the operator group image to an operator of the electronic instrument; a means configured to receive an operation signal from the electronic instrument; and a means configured to, upon reception of the operation signal, display an indication that an operator from the operator group image corresponding to an operated operator of the electronic instrument is selected.

Abstract: An automatic accompaniment apparatus including a determiner that determines a current position in a music piece in progress, a selector that selects an accompaniment element data set to be used out of a plurality of accompaniment element data sets every time the determined current position arrives at a predetermined switching position, an accompaniment data generator that generates accompaniment data indicating automatic accompaniment based on the selected accompaniment element data set, a calculator that calculates time information corresponding to a time required until the determined current position arrives at a next switching position, and a display controller that controls a display to display arrival advance notice information indicating the calculated time information.