An electronic musical instrument is configured to store music data
including performance data on a plurality of tracks and receive
designation of a track or tracks so that when a test-listen button for
receiving instruction of test-listen of the designated track(s) is
pressed, the electronic musical instrument plays the performance data on
the designated track(s) among the music data and plays the performance
data on the other tracks at a volume lower than the volume of the
designated track(s).