still a little confused... if you are singing the only way is to use a harmoniser surely?
How about this for an idea - record the melody with a suitable technichord on part 4. This technichord can be assigned one of the vocal samples. Then play back with the melody muted and sing the melody into the mic with a harmonised backing from the keyboard.
You can still play live in exactly the same way just by muting the melody voice on right 1, but playing a silent melody in order to generate the harmony on part 4 while you sing into the mic.
I can't remember the exact technichord orchestrator on the 3000 and suspect you cannot use part 4, this will have been introduced later. Maybe it is possible using R1 and R2 if the technichord harmony appears on one and you mute the other. You will have to try with both conductors on and see where the harmony voice appears, then mute the other lead voice in the mixer.
[This message has been edited by technicsplayer (edited 02-26-2002).]