Welp after spending the week going through all my tapes I can't find it. I know I recorded it to .wav and put it on my computer at one time but it was lost when I formatted everything awhile back.
I knew it wasn't Sarah however being positive it was with the Basie Orchestra backing the singer I finally found it.
It's on the Diane Schuur & the Basie Orchestra disc originally released on the GRP label then re-issued by Verve.
Thanks for all your help guys