Hi Joe
I use TC Helicon extensively in my harmonies. Sometimes I use the generated track and sometimes I use them to "learn" the harmonies and then sing them and record (and then use Melodyne to line the "sung" harmonies up with the generated harmonies). Sometimes I use both.

There are quite a few articles on how I do this on my blog.

www.joannecooper.co.za.za/blog


LyricLab – Where words become music https://www.lyriclab.net/