Artificial Intelligence is the next hot [*****] coming up these days.
After having RealTracks, why not having AI generated singers?
Actually there are lots of ttsmp3 tools with professional output for spoken text.
The last days I've found some programs which provide AI singing voices controled as a midi instrument with lost of expressions and well sounding.
This could be especially helpful for all the instrumentalists which have no singing experience nor a good singing voice.
Also it could be a real good helper for background and choir voices to save time and money in the studio. Or just to fix ideas to see it works or not.

As a new feature in Biab it would make the package complete.