On piano, Michael Nyman was just one of the group of musicians who played this chamber opera, entitled The Man Who Mistook His Wife For A Hat, the others being Alexander Balanescu first violin, Rupert Bawden viola, Elizabeth Perry violin, Ruth Phillips cello, Hugh Webb harp, Elizabeth Wilson cello. However he was the composer and musical director (the opera's director being Michael Morris). The singers were Emile Belcourt tenor, Patricia Hooper (who was a friend) soprano and Frederick Westcott baritone. The opera is based on a case study by the well-known neurologist/philosopher Oliver Sacks. Eddying music, strongly influenced by minimalism I guess. Very interesting.