Tony, I don't know the answer to your specific question.  Surely someone on the forum has the answer.  Alec?
As we talked about before, I use a small four octave Novation midi controller, that just plugs into my computer USB port, to do notation work.  (I know the 6000 has no USB capability)
I looked at the Notation Composer web site.  Liked what I saw.  If you choose to play the song directly into the software, there will be a lot of editing needed.  I didn't see a quantize function but surely it is there.  You will need that.  In the past when I started from scratch, I usually found that entering the notes in a step function worked best for me, rather than recording as I played a song.  Good luck.