I am definitely getting that CD as I have them all except this one of course! I tried to figure out which songs they sang on too from listening to the samples on his site, but there wasn't enough of each song to tell.
Like Susan said, it does sound like a wonderful CD.......I commented on his site and he replied that he did a duet with ME and had DP and Wes on one as well. Will let you know if I find out anymore!