A great venue, a great tour, two great artists and a great performance. So it was for icons Mark Knopfler and Emmylou Harris at the Gibson Amphitheatre in Los Angeles before a sold-out crowd. Their concert together, one of only a handful in the U.S., followed the release of All the Roadrunning, their long-awaited rootsy collaboration. That special night has been captured in this unique SOUNDSTAGE episode.  Highlights include the title track "All the Roadrunning," Emmylou's "Red Dirt Girl" and Knopfler's "Speedway at Nazareth."