Ансамбль `24` Ленц, Жорж - Caeli enarrant III, for 12 strings, 3 percussionists and 1 boy soprano (1990-2000) Ленц, Жорж - Caeli enarrant IV, for string quartet and four cymbals (1991-2000) Ленц, Жорж - Caeli enarrant VII, BIrrung from `Mysterium` for 11 strings (1997) Ленц, Жорж - Caeli enarrant VII, Nguurraa from `Mysterium`, for clarinet, violin, cello, piano and percussion (2000-2001)