This week on a Prairie Home Companion, we'll visit the Kimmel Center in Philadelphia, and install Philip Brunelle at the helm of America's largest concert hall organ, the mighty Fred J. Cooper Memorial Organ. Perennial Bluegrass favorites Doyle Lawson and Quicksilver will be there too. Joining the Royal Academy of Radio Acting, the always-charming host of "Fresh Air," Terry Gross. And sitting in with the Guy's All-Star Shoe Band, Mr. Andy "The Fifth Shoe" Stein. Join us this Saturday from Philadelphia.