the MPU-401 and MT-32.  Speaking of which.  What is an
MT-32 like
 compared
 to the MPU-401?  I've never seen one. 
IIRC the MT-32 is a full length card.  I'm fairly sure that back in the day I picked
one up.  Can't remember how.  The music from it was superb, at least for the time --
probably still.  I think I played a lot of Wing Commander with it.
Later I got a Sound Canvas, which I on-sold to a musical friend of mine.  I think he got
the MT-32 too.  He used to have a Gravis which I lusted after somewhat, particularly
because of the Gravis-only demos of the time.
I should see if he still has any of that old stuff.  He's a bit of a pack rat simply
because he's always too busy to sort anything out.
Chris J.