You will have to put extra midi-data into the midi-file by using a computer-sequencer.
I'm not familiar with midi-comando's, so i can't help you there
! But i know you have to set the receive-channal of the SVex to the same channel that has that extra data.
I have an EM2000 connected to the VWSex but i only use it to change key from my left-hand notes (lower2). I never use midifiles to sing along.
[This message has been edited by Luc Janssens (edited 01-18-2000).]