Patent ID: 7683250

Claim:
An electronic musical apparatus comprising: a plurality of part selecting controls; a memory for storing music data comprising performance data on a plurality of tracks; an assigning device that assigns an arbitrary track among the plurality of tracks to each of the plurality of part selecting controls according to an instruction by a user a designating device configured to designate, according to an operation on the plurality of the part selecting controls, at least one track among tracks assigned to the part selecting controls; a control configured to receive an instruction to initiate a test-listen mode of the at least one designated track; and a controller configured to, when the control receives the instruction to initiate the test listen mode, start playing the music data in the test-listen mode, where the at least one designated track is played at a designated volume, while all of or some of at least one remaining track other than the at least one designated track among the tracks assigned to the part selecting controls is played at a volume lower than the designated volume of the designated track but higher than zero, to enable the at least one designated track to be emphasized.