Sadler's Wells; Linbury theatre, Royal Opera House, LondonLyon Opera Ballet perform alongside digital forms to the music of Gavin Bryars in a Merce Cunningham double bill. Plus, a new twist on Giselle The American choreographer Merce Cunningham loved birds. He painted pictures of them every morning. In Tacita Dean's evocative film of him at work, made in 2008, the year before his death, birds fly in and out of the fr…
