The Rwandan-born Dorothée Munyaneza has led a necessarily peripatetic life. Exiled from genocidal Rwanda as a child to come of age in Britain, she then forged a sophisticated career of choreographed sung story in France. Nevertheless, her work is rooted in history. Munyaneza is committed to reflecting upon what has not been properly remembered. For the six-person Umuko, which opens Berlin’s Tanz im August festival, she joins young Rwandan dancers, poets, and musicians to imagine a future homeland that “does not forget.” —Apollinaire Scherr