I'm more familiar with the version on "The Complete '50s Masters," where her voice is way more upfront an with much less echo (if any.)
Now, I guess the FTD version is probably the original mix, but I'm not sure, since I got rid of my early "King Creole" CD (from 1988 I think it was) as soon as I got the '50s box in the late '90s.
Anyway, back to the question...
Listening to the FTD CD something caught my attention: We all know these sessions were recorded in binaural (second channel used for orchestra and overdubs or whatever) but, as far as I know, the only sources availables now are the mono masters (plus a few outtakes of some songs, "Crawfish" NOT included) and the acetate of the unedited master, then... how did they do different mixes of Kitty White's vocals with what's left? It's imposible having just mono masters...


Kitty White
AURAL EVIDENCE HERE:
http://www.elvis-collectors.com/forum/viewtopic.php?f=1&t=55630&p=808317#p808317