Early this year, the Swedish sister act broke through with a lovely album called The Lion's Roar, which mixes wearily winsome mountain music with a welcome sunny side in tracks like "Emmylou" — an ode to musical couples seemingly made for the Newport crowd. First Aid Kit performs here as part of the 2012 Newport Folk Festival, recorded live on Saturday, July 28 in Newport, R.I. For more of NPR's coverage of the Newport Folk Festival, visit www.npr.org/newportfolk.