Here's the first obituary I've seen; there will be many, many more.
I saw Flatt and Scruggs and the Foggy Mountain Boys somewhere around 1968. They were honored by the folkies of the early '60s, but by the late '60s there were some reservations about them because they were politically suspect. And certainly the country music crowd in general had no liking for hippies. I remember feeling a bit out of place at their concert, which was outdoors somewhere in Tuscaloosa...I wonder if maybe it was a political rally of some kind. I don't really remember much about the show, and anyway bluegrass has never been my favorite music. But I remember Earl--his flying fingers, and the contrastingly calm and slightly dreamy look on his face, as if he were in some place where nothing but the music existed. Apart from admiration of his music, he seems to have been almost universally liked and respected. Another great one gone. RIP.
I considered posting something from YouTube but there are so many--if you want to hear him, go have a look. No, wait...on second thought: