Can Garrison Keillor sing as well as he seems to think he can?

I’ve always loved Garrision Keillor’s show and particularly his monologues. I just saw a clip of him leading a “sing-along” on his last show, aired this weekend. It was terrible. He seems to have always loved Americana and brings on great singers whom he feels he can sing along with. I don’t think he has much of a singing voice. What do you think?

Any other thoughts on Keillor and his non-musical contribution to American culture also welcome.