Who has/had the best singing voice of all-time? My vote goes to Whitney Houston.
Christine McVie, Kate Bush
I love Christine. She's my favorite Fleetwood Mac. Her voice is so soothing, comforting and loving.
@jujuofthesea i also like christine mcvie and think she doesn't get enough credit for what she has done not only on her own, but for the mac too
Mariah Carey, noted for her eight-octave vocal range.
In this song, her voice goes into the "whistle range."
Mariah Carey - Emotions
Cass Elliot or Jennifer Warren
Almost impossible to answer, I saw one response... "no right or wrong answer"... very true, but if it's your favorite, great, but the question is who has or had the "best" singing voice.
In opera, perhaps Pavarotti and Callas, Pop/Country, maybe early Willie Nelson, Pop music, once upon a time, Frank Sinatra and Ella Fitzgerald. That's why my initial comment, almost impossible (for me) to select just one.