If you want to have different sounds for different tracks, each instrument 
sound must be on its own MIDI channel.

So if track 1 is piano, put it on MIDI Channel 1. If track 2 is bass, put it 
on MIDI Channel 2, etc.


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Q:  How do you get to play other instruments, the ones that my keyboard 
    doesn't have?


A:  There aren't any sounds in the software itself. The software simply sends
    MIDI data (commands) to either your soundcard or to your keyboard for 
    playback. Only sounds included in your keyboard or internal soundcard can
    be used. 

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