Mary Costa has such a beautiful singing voice
https://www.youtube.com/watch?v=Pv0tduqJE_8 at 1:52 in.
She's truly got the voice of an angel.
I completely agree. Definitely one of the most beautiful singing voices of any Disney character, and one of the main reasons why I got into classical singing seriously in the first place.
"Life after death is as improbable as sex after marriage"- Madeline Kahn(CLUE, 1985)