"Gemeaux" (1971-1986) is one of Takemitsu's grandest works in terms of musical arc, scoring and length of gestation. It is written for two orchestras with two conductors, and with solo trombone at one orchestra and solo oboe at the other. As half of it was written during Takemitsu's "modernist apogee" of the turn of the '70s, we find a host of extended techniques, and at one point the soloists even speak through the mouthpieces of their instruments. As the other half of the work belongs to Takemitsu's late period, we find a successful of elegant self-contained gestures, his musical "gardens". The synthesis of two creative periods, however, makes for a piece singular in its impact in Takemitsu's oeuvre.