RE: The upcoming Garrison Keillor performance at the Newmark (on November 5, if you really want to know):

"He whistles his S's. When he's on in the car I like to turn the volume way down so you can only hear that. It's like the most outré radio performance art you can imagine.

I think I might try that out this weekend. God knows it can't be any worse than actually listening to Prairie Home Companion.