West Virginia Public Broadcasting’s Mountain Stage, now in its 40th year as one of the nation’s most cherished and continuing programs in public radio history, descended upon Sonoma State University in Rohnert Park, Calif., on August 6. The occasion was to record a live-performance radio broadcast with a diverse, one-of-a-kind lineup that featured the likes of Booker T. Jones, Chris Smither, Karla Bonoff, Steve Poltz, and Amber Rubarth.

With a guy like Stephen Stills, an icon of 60s folk rock and roll, you can’t help but wonder how the passing of time might figure in to a live performance. Decades after his heyday, Stills still came in with his A-game at the Ogden Theater in Denver on Sunday.