(Photo Courtesy of Factory International) Du Yun and Royce Vavrek’s Pulitzer Prize-winning contemporary opera “Angel’s Bone” is set to make its UK premiere. Together the English National Opera (ENO) and Factory International present the new production directed by Kip Williams. Kantos Chamber Choir and the BBC Philharmonic Orchestra are among performers. Vavrek’s libretto explores the dark forces that drive people {…}