The world premiere of a new commission takes centre stage as London Sinfonietta and Matthew Bourne explore the boundaries between composed and improvised music. Matthew Bourne's solo performance ; Kaikhosru Sorabji's 'Fantasiettina Atematica'; Luciano Berio's 'Sequenza VII' for oboe; Helmut Lachenmann's 'Kinderspiel'; Iannis Xenakis's 'Charisma'; Salvatore Sciarrino's 'Addio Case del Vento'; Iannis Xenakis's 'Rebonds A'; plus Matthew Bourne and the London Sinfonietta's new collaboration for Written/Unwritten.