Very sad day. Saw him in concert nearly a dozen times. Just an all time great. Been watching Prine videos on YouTube all night. I will really miss the 9 minute version of Lake Marie at the end of every concert.
Not exactly what you asked for, but Kacey Musgraves wrote a tribute song to him when she was a teenager..."Burn One With John Prine" Great YouTube video of her singing it to him onstage.