Garrison Keillor: Of thee they sing with feeling

I’ve been riding around the country on a bus for six weeks, doing a dog-and-pony show that, among many other things, included me walking into the crowd and humming a note and the audience singing, a cappella , “My country, ‘tis of thee, sweet land of liberty” and singing very well, sometimes awfully well, and if so, we swung into “Swing Low, Sweet Chariot,” “Love Me Tender” and two verses of “The Battle Hymn of the Republic,” including