. ♪ ♪ later they were joined by singer and banjo player rhiannon giddens for american folk ballads. ♪d singer who then spent years exploring and playing african- american appalachian styles. big ears offered a new way in to that music. ♪ ♪ >> it's great because it gets you out of your comfort zone and it makes you go, okay, i'm going to consider something from a totally different point of view. you can't make art by thinking "this isn't going to fit." you just do what seems right. >> brown: rock music also had a central role at "big ears," but again, in unusual forms. guitarist nels cline, best known for his work with the band wilco, performed here with a painter, norton wisdom. ♪ ♪ and another genre-bending guitarist, bryce dessner, a rock star with the band "the national" and a classical music composer, played a piece he wrote for the kronos quartet. ♪ ♪ >> we are blessed now, my generation, where there's a much more open, and thanks to them, very much so, where the path has been paved. the world is just a very open and beautiful environment, where we can, and a place like big ears