An electronic musical system by which settings on tone generators can be carried out without discontinuing a user's music production. The electronic musical system is comprised of a musical control apparatus including control operating elements and an electronic musical apparatus including a sequencer having a plurality of tracks, and is configured that various functions of the electronic musical apparatus can be remotely controlled by a user by manipulating the control operating elements of the musical control apparatus. When a tone generator control screen display button which is one of the control operating elements is depressed by the user, a tone generator control screen window for a tone generator assigned to a currently designated track is made active.