I haven't checked in a few years, but the Frontierland area music used to play in the waiting area (I have several recordings off the ALD system I used for comparison). There is a version of Shenandoah in the Frontierland area music (Track #18). Are you saying the version you heard in Country Bear Jamboree is a different arrangement?
I've got a question...more about the entire original show. Like "tiki room" both had lp soundtracks that were mixed mono. Why has The enchanted tiki room been available for years now in full stereo yet The Country Bear Jamboree only exist in mono (an d a poor quality mono at that). The CBJ was a early 70's entry...years after Tiki...how could the stereo tracks be non existantant ?
There's an urban myth that the CBJ was released in both mono and stereo on LP. It wasn't - only in mono. The reason for the myth is that one of the releases has the prefix "ST" which was released under the story teller numbering system and wasn't the prefix for "stereo". This has been covered here (including a member who bought the ST release only to find out it was mono. This is confirmed in the Disney record releases book. Mono only.
Short answer, Disney never made it.
The CBJ sessions were recorded in 1971 on what amounted to "hi-def" sound technology... on 70mm multi-channel film. These were then mixed down into the LP version which is more or less the version from which all other versions are sourced.
There isn't much of a market for CBJ soundtracks, to be honest. In the late 90s the Disneyland Tiki Room switched over from analog to digital, for which all of the old tracks were transferred out of the WED graveyard. This means that WDI had a full stereo version of the soundtrack on a computer somewhere ready to go to be sent off to be put on CD. This is why stereo mixes of Tiki are common.
The big chance for CBJ came in 2005, in the lead-up to the Disneyland 50 box set. Tiki Room used the 2005 re-master of the digital soundtrack, but both CBJ and America Sings used improved transfers of the old LP mixes with some reverb laid in because transferring all of the magnetic tape and re-mixing the shows from scratch was cost-prohibitive.
Finally in 2009, WDI got a budget to re-mix CBJ and had to go back to the 70mm recordings as the only source they had on file was derived from that mono LP. This resulted in a slightly different 2009 version of the show soundtrack, with slightly different choices in terms of editing and instrument choice. This is most evident in the moments following the end of "How Long Will My Baby Be Gone"; the original mix used drums while the new version brings a wobble board forward in the mix. In 2012 this new mix was used as the basis for the cut-down version of the show. Presumably a clean copy of the new mix is ready to appear on future releases, but there hasn't been any in years now!