We were tipped off that Imogen Cooper was playing in King’s Place last night.   Indeed, she was:  an ambitious programme of late works – late Haydn, still playful, late Beethoven, the Sonata Op. 110, ending with the ‘Arioso dolente’, and late Schubert, composed just after Beethoven’s death (I had not known that Schubert attended Beethoven’s coffin to its grave);  in between the Haydn and the Beethoven, she played a short, attenuated piece by Thomas Adès based on a song by Dowland.   Powerful stuff.