sentences:  For the 25th anniversary of the National Theatre, Caird directed the NT 'Chain Play', a drama written in 25 consecutive scenes by 25 NT dramatists, a mad and wonderful event.In 2005 Caird wrote and directed "Twin Spirits", a dramatised concert based on the music and letters of Robert and Clara Schumann, in aid of the Royal Opera House, Covent Garden's educational outreach programme.It was produced by June Chichester and starred amongst others Sting, Trudie Styler, Ian McKellen, Simon Keenlyside and Rebecca Evans.