Just listening to Rebecca Campbell's fine back-up work on a Lynn Miles CD and it brought back memory of this thread. I remember her work with Fat Man Waving and Three Sheet to the Wind too.

I was also listening to some old Gram Parsons recordings the other day and remarked at how much Emmylou Harris had added with her backup vocals to his sound. A lot of his earlier stuff tended to sound almost like demo quality, I always thought (which is not necessarily a bad thing all the time). He also influenced her quite a bit too, it seems. She perhaps "oversang" in the beginning, maybe trying for a Joan Baez thing, when he first started with her, but I think she learned a few things about stripping songs down to their bones and pumping more feeling into them. By the time she went solo (after GP passed on), she really could knock your socks off. And she still does a lot of great back-up work today.