WOK has announced the release of VVOC, a free generator for vocal formants and synthetic choir sounds.
VVOC-1 generates vocal sounds with a vintage electronic touch. Good for synthetic choir sounds.
The integrated BBD chorus and the X/Y pad for selecting the formants, a pitch glide function and a hidden secret unveil more power than the easy GUI might imply.
VVOC is a VST instrument (32 bit plugin/ Windows OS) available for free via WOK.