Minnie Riperton.
Arguably the best voice in the world. She could actually enunciate words in the "whistle range". NOBODY else could do that! They don't even teach opera singers to enunciate words in that range. About the closest to her range is Mariah Carey.
i really miss her.
Minnie was something wasn’t she!
I used to put that album on and turn it up for people that had never heard her and they would be blown away when she went to those triple octaves — wow.