Sunday-Monday. Although he’s known for his measured tone and sepia-toned audio tours of traditional Americana, longtime “Prairie Home Companion” leader Garrison Keillor is mounting his biggest road trip yet before stepping down next year as host of the popular public radio program. The 30-city “America the Beautiful” tour features two and half hours of entertainment from Keillor, singer Sarah Jarosz, Richard Dworsky & the Radio Rhubarb Band and Fred Newman, plus classic segments from the show’s 41-year history. 7 p.m. Aug. 23 at Red Rocks Amphitheatre, 18300 W. Alameda Parkway in Morrison. Tickets: $42.50-$69.75, 888-929-7849 or . Also at the Benedict Music Tent as part of the Aspen Music Festival, 7 p.m. Monday, 960 N. Third St. in Aspen. $45-$85, .
