Hallo all, I had not tried this combination before and was struck by how well it seemed to suit the early polyphonic style. It sort of 'flows' along. Possibly some HA users may have a use for such an effect?
The virtual singers are a choir set to only 4 or 5 voices. The choirs sound is not particularly good, but the way they seem to lighten and fill out the sound of the real singers I find very pleasing. And it seemed to work without any great editing. Volumes need to be balanced by ear .. they are roughly the same in the attached mp3.
I think most of the VS choir voices were made from the standard VS female choir and male choir, but the soprano may have been different. The size of the VS files is small so they can be attached here to save anyone the bother of finding and adjusting voices.
The nearest voices to the sound of the real singers used are in the "goodies" section of this site. They are not exactly the same, but you could try:-
soprano ... Davidia lat ital alto ..........Kathleen Robert tenor ........ Davio tenor operatic etc. bass ....... Da Pacem Bass latin
You can adjust the attack rate or vibrato or treble/bass or whatever to your own taste.
An extra choir seems to lighten other singers as well. I tried this from the magic flute. ( Unfortunately the pdf conversion went very wrong so I repeated the first bit instead) The singing is German with Robert tenor in the lead. Both other real voices are Davio baritone converted to German. With the extra parts added it sounds like my idea of a German folk choir. It really is curious how the solo real voice sounds different and I think better/softer with the choir behind it.