She's my favorite. Her voice is so goddamn smooth and legato like nobody I've ever heard. She had great range too, hit those low notes great. Also, I dont like saying best, but I think she is undisputably the best scatter ever. She could go for minutes on end and it was like listening to an expert saxophone player, I could go forever.
Carmen Mcray
I've only heard some of her stuff, but she's good at scatting, and she's also got an incredible sense of rythym. She was great at throwing in hemiolas and syncopation to her singing as well.
Stevie Wonder (had to pick somebody still alive)
Not too much to say specifically, he's just really good. Great tone, great vibrato.
