This first volume of John Cage’s complete works for flute spans a fifty year period, from the Three Pieces for Flute Duet of 1935—deft studies in chromatic writing—to the 1984 Ryoanji, which involves the use of pre-recorded flutes and percussion with resultant diverse and intricate textures. Two is the first of Cage’s important ‘number’ series and is edgily ruminative, while Music for Two, written for any combination of the 17 different instrumental ‘parts without scores’ provided by the composer, is heard in an arrangement described by Katrin Zenz as a ‘new piece for flute and piano’.