Thank YOU, lynnholt! We are excited for you! "More than a decade" is a long time between discoveries of new Anne Murray music.
Since you are both a Glen Campbell and Anne Murray fan, we are interested in your thoughts about "All Through the Night"; was it worth the wait

and how does it compare to the duets on the GC and AM album?
This information about the second planned/unreleased Anne Murray/Glen Campbell duets LP on the Capitol Records label came from posts shared on the net by a long-time Glen Campbell fan and discographer who uses the moniker
Son of Flintstone.
According to Son of Flintstone:
There were/are three confirmed and four possible unissued tracks from the sessions that produced ANNE MURRAY/GLEN CAMPBELL still in Capitol's vaults:
Matrix 77077, "Heaven Is Here" (recorded 7/21/71)
Matrix 77078, "Break My Mind"
Matrix 77214, "Summer Knows" --likely Murray/Campbell duet
Matrix 77260, "Home Again" --likely Murray/Campbell duet
Matrix 77261, "My First Night Alone with You" --likely Murray/Campbell duet
Matrix 77262, "A Stone's Throw" --likely Murray/Campbell duet
Matrix 77485, "Oh Boy" (recorded 10/06/71; the bulk of the album tracks were recorded/assigned matrices on
this date. I believe "Oh Boy" is the Buddy Holly song.)
We can only "say a little prayer" that Glen's management company, TKO, will release this material as well as all of the other Campbell recordings in Capitol's vaults (and possibly other labels' vaults), at least the recordings that Glen would have wanted to release! Capitol may even have unreleased Anne Murray recordings.