are pictorial representations indicating the musical content of the tracks and or the musical instruments which produce the sounds on the tracks as illustrated icons 80 82 84 and 86 represent trumpet drums piano and guitar direction tracks respectively in fig4 a none of the direction tracks are selected in fig4 b the trumpet direction track is selected and the trumpet icon designated as 80 39 has a shape which is different from the de selected icon 80 rather than providing different shapes for selected and de selected icons it is within the scope of the invention to display selected and de selected icons with different colors the display screens illustrated in fig4 a and 4b are not shown as including control icons or buttons in this embodiment of the invention buttons on the input device control the various functions and options of playing a selected song for example if the input device is the keyboard 18 the various control buttons may be implemented as certain sequences of keystrokes if the input device is the joystick 20 it may have various buttons or movement sequences that correspond to the control icons described above fig5 is a flowchart of a gui 78 for implementing the functionality of the system 10 the gui 78 is provided in the form of a software program which is hardwired into the system 10 or provided on a floppy disk cd rom or the like and loaded into and run by the system 10 the software can also be downloaded from the internet or other source the.