Garrison Keillor did “A Prairie Home Companion” for forty years, wrote fiction and comedy, invented a town called Lake Wobegon where all the children are above average, even though he himself grew up evangelical in a small separatist flock where all the children expected the imminent end of the world. He’s busy in retirement, having written a memoir and a book of limericks and is at work on a musical and a Lake Wobegon screenplay, and he continues to do “The Writers Almanac” sent out daily to Internet subscribers (free).

Garrison Keillor Tonight is an evening of stand-up, storytelling, audience song, and poetry. One man, one microphone. There are sung sonnets, limericks and musical jokes, and the thread that runs through it is the beauty of growing old.