Just looked up Kenny Rankin in the All Music Guide to Jazz. Thanks, I had never heard of him. A short quote from that book: "Kenny Rankin sings like Chet Baker would have if Baker had a voice." So I killed two birds with one stone: (1) found out the existence of Rankin ("Professional Dreamer" on Private Music as five diamonds, could be one man's opinion, but now I have two favourable ones , so I'll probably buy the album and check him out myself), and (2) somebody else agrees with me that Baker had no voice. Rather strange since someone up there in the thread chose him as the "Best". Conclusion, degustibus non disputandem and you can be the best singer and yet have no singing voice.