I follow a post of Justin Beiber thinking about a Dylan Cover CD, with a tribute CD for John Denver... "Well FAAAAARRR out! I had to just do it... and I'm not sure it's completely worth it across the board, but I'm glad I did it. Highlights to me are Brett Dennen's Annie Song, Josh Ritter's Darcy Farrow, Evan Dando's Looking for Space, Amos Lee's Some days are like Diamonds, and Lucinda William's This old guitar... Prisoners by J. Mascais is already unchecked never to be listened to again.
Here's a whole list http://www.pastemagazine.com/articles/2012/10/new-john-denver-tribute-album-includes-songs-from.html