Mae Questel, sometimes spelled Questal was the voice of Betty Boop and Olive Oyl, among others for cartoons. What you may not know is that she was also a singer and recorded a bunch of songs, in the Betty Boop style, of course! Here's the cute On the Good Ship Lollipop, which is mostly associated with Shirley Temple.
https://www.youtube.com/watch?v=DMCCXf8qQME
Mae Questel
Mae Questel
You trying to tell me you didn't hear that shriek? That was something trying to get out of its premature grave, and I don't want to be here when it does. - Phantom of the Paradise (1974)
Re: Mae Questel
She had a most unusual voice—a natural for cartoon voice work.