MATERIAL – In Two⁶ the players share the material of SILENCE, which may be used to fill any of the given TIME BRACKETS.  In addition, each player is given material unique to his or her instrument. Some of this is derived from the DUCHAMP TRAIN (the piano’s slowly ASCENDING passages, the violin’s sustained double stops).  Inverting this relationship, the violin's MICROTONAL phrases ascend gradually from string to string over the course of the piece, while the correspondingly melodic material for the piano – IMITATIONS of Satie – remains in a fixed register.  In One^lO and Six Melodies the homogeneous material is derived from a single GAMUT for each piece.  The even simpler gamut of pitches for Eight Whiskus is varied through changes of bow speed and pressure.  In the more freely-written Nocturne, Cage frequently uses the same material for both violin and piano, unifying the sound of the two instruments.