Many thanks for the clarification, Paul.  To really drive the 
point home, it seems as if Job and many other confuse "driven 
by MIDI in real-time" performances with "driven by a sequencer 
in real-time using the MIDI protocol plus various other knowledge 
the sequencer has about the MIDI, specifically knowledge about 
future data".  The latter, of course, is quite possible.  The
former is impossible without serious limitations in the orchestra
design department.

Sorry to hear you didn't like Common Music, Job.  :)