In this special edition of Live Wire, Luke goes backstage during soundcheck for "Lampedusa: Concert for Refugees" to talk to some of the most iconic musicians of our time. Emmylou Harris reveals how she got waylaid on her way to Woodstock, Dave Matthews talks about managing a wide spectrum of his feelings during live performances, Steve Earle discusses how his real-life struggle with addiction intersected with his role on the HBO series The Wire, Patty Griffin recounts how she overcame her shyness through music and how her parents have helped her stay humble and Brandi Carlile reflects on her musical start as a teenager winning karaoke championships.