Voices are not copyrightable. They MIGHT be protected under other laws. This case is the closest the US has seen, but several features of it make it different

Voices are not copyrightable. They MIGHT be protected under other laws. This case is the closest the US has seen, but several features of it make it different than AI voices, most notably that an impersonator was hired to sing an artist's own song, so there's no room to say "it's just a coincidence". https://en.m.wikipedia.org/wiki/Midler_v._Ford_Motor_Co https://en.m.wikipedia.org/wiki/Midler_v._Ford_Motor_Co.