25-28 May. Bern:Ballett, the ballet company of the Stadttheater Bern, returns to London with two UK premieres by artistic director Cathy Marston and New York wunderkind Andrea Miller Tickets: www.roh.org.uk The love triangle between composers Schumann and Brahms and Schumann's wife is the subject for Marston's 'Clara'. Miller's 'Howl' is inspired by the US wars in Afghanistan and Iraq.