PM Ron. And for Justin's Drum mp3, he will post it here when he reads this.
Dodgy Russian site? Unsure, so be careful, but this is it - Jim Keltner - Improvisation - Track 2.
http://lossless-flac.com/test-disc/428-va-usher-audio-be-there-vol-1-2004.html
TIDAL has this on some Sheffield CD. But it sounds terrible for some reason.
There appear to be loads of torrents around for naughty people. My copy is a 320KBps MP3 but it was sourced from the Usher disc. It is quite commonly used at hi-fi shows.