HIVE

Yo, I haven't tried something like that myself yet, but voice-swap.ai seems to offer what you're looking for, but they only offer a few preset voices. You could also use the elevenlabs speech-to-speech feature (if your audio has music in it, split it into vocals and music first), but the pitch will not be 100% preserved, so you'd have to use autotune as well I guess?

Hey. Thanks for the reply. So, there's speech to speech too, that's good. I'm not quite worried about the pitch but more of the musical line/part(?) being altered to unrecognizable or monotonous speech.

I tried it out. Here. Split the song into vocals and music first with another AI tool I googled (it's free to use), changed the voive with elevenlabs, then recombined with Audacity. Would this work for your purposes?

Of course, I'm not going to put it with the instruments as well, only the vocal part.
Thanks for trying it! Sadly, it sounds deformed beyond or below the proper octave It would need post editing with something like AudioTune.

But at least it seems doable. Which voice reference did you use?
Would love to hear Illidan or Thrall sing it, lol.

Jaina is always my go-to testing voice . Still has the best quality of all the Warcraft voices I trained. My Uther is scottish for some reason.

I wonder why: Michael McConnohie
Hmm....

I also wonder if it gives less errors if the voices are somewhat similar, like if you'd try making a soprano-like interpretation (like me singing horribly but at least on the proper scale) and editing that to sound like I don't know Sarah Brightman.