Sounds amazing! Just to add a usecase - for many people, creating a decent voiceover is one of the big sticking points for producing youtube videos or educational courses. If I could write a script, and have software generate a decent enough voiceover, it would be amazing. It's not even necessary to copy anyone's voice, as long as there's a selection of the most comprehensible and human-sounding ones. Then, you could…
It would have been an order of magnitude better if I could just generate arbitrary phrases in his voice.
(Or maybe not; maybe the constraint made the video better.)