@bdp24 we are very much sympatico on that list (I listened to Loretta's Don't Come Home a-Drinkin'... on vinyl last night with my wife), although I am not very familiar with a lot of the newer artists you mention, but I will change that. For modern stuff, I've been following Gillian and David since Revival came out back in '96 - I've only seen them once, but it was at the Ryman and was pretty magical. I also love Hurray for the Riff Raff, although I'm not grokking their latest effort. I have always dug Steve Earle, Lyle Lovett, k.d. lang, and that type of thing as well.
I was lucky enough to see John and June Carter at Big Top Chataqua in Bayfield, WI in 1997 and just the memory of it gives me goosebumps. What a talent.
That Gram Tribute in 2004 was something I toyed with attending but funds and timing wouldn't allow it.
I consider the Louvin Brothers to have the best harmonies of any performers I've ever heard. It's spooky how close the Everlys got but there was something about the way those Loudermilk boys sang that could stop a clock.
I've been binging on Ry Cooder and Gustav Mahler lately but I believe I will take a trip down the country lane after mowing the lawn today.
Happy weekend!