Magic Music Visuals

How do the midi notes trigger the motion ?- and what is used for the sound generator ? I have the midi set with my own instruments so does that mean that I can provide a 2tk master audio (not midi but mp3 or wave) and then have multiple audio tracks for the separate midi tracks ( like piano or bass) that can be programmed to trigger animation of shapes etc to repeat an exact melodic phrase or a pattern of syncing to an exact point every few bars ? I guess I mean can the midi be used for triggering and not for sounding?

I have the midi set with my own instruments so does that mean that I can provide a 2tk master audio (not midi but mp3 or wave) and then have multiple audio tracks for the separate midi tracks ( like piano or bass) that can be programmed to trigger animation of shapes etc to repeat an exact melodic phrase or a pattern of syncing to an exact point every few bars ? I guess I mean can the midi be used for triggering and not for sounding?

Yes