Plot: The dynamic sister duo CHARAN-PO-RANTAN celebrates 15 years as a group as they take on the tiny desk! Street performer and accordionist Koharu and her younger sister Momo (still in high school at the time) formed the group in 2009 and have dazzled audiences with an eclectic mix of Balkan music, chanson and more. This time, Momo's energetic vocals and Koharu's dynamic accordion are joined by a banjo ukulele and a sushi tub drums for an exhilarating performance