Joe Ely, progressive country, alt country, whatever you want to call it, musician, from Parkinson's, Lewy Body dementia, and pnemonia. I saw him twice, once back in the day with a band, more recently in a duo format. I don't think he had been diagnosed all that long ago. He or his wife were online not that long ago saying that Joe was working on his autobiography and encouraging fans to send gig flyers, media stories, their memories, memorabiia, and anything else related to Joe's career for help with and possible use in the book. It's especially sad he died at a time when he hadn't been working on that project that long.
https://en.wikipedia.org/wiki/Joe_Ely