a recipe for an average sounding midi, particularly on ordinary soundcards. Use gm voices in the backing, apc convert if having used the automatics. This gives a maximum of 9 tracks if all parts have been used which is not necessarily the case. Then real time record the melody/harmony with gm voices. I don't know of many midis that have 6 voice changes in the melody, but if that is what you want I would punch them in on different tracks, or just copy and paste verse/chorus etc. The midi then at least sounds as if it has been played with the feel of the instruments, rather than the sterile conversion of the playing feel of one rich voice changed to a different feel of a thinner one.