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Gregson: Quartets: One - I. Primary Colours (6:11) -- Gregson: Quartets: One - II. The Day Before (3:10) -- Gregson: Quartets: One - III. Sequence (Three) (2:32) -- Gregson: Quartets: One - IV. Space (5:12) -- Gregson: Quartets: One - V. Duplicity (6:00) -- Gregson: Quartets: Two - I. Sequence (Four) (4:30) -- Gregson: Quartets: Two - II. Warmth (4:22) -- Gregson: Quartets: Two - III. Plainchant (4:21) -- Gregson: Quartets: Two - IV. Drone (5:55) -- Gregson: Quartets: Three - I. Even (5:37) -- Gregson: Quartets: Three - II. Up (2:43) -- Gregson: Quartets: Three - III. Sequence (Eight) (3:19) -- Gregson: Quartets: Three - IV. Cantus (4:49) -- Gregson: Quartets: Three - V. Murmuration (3:37) -- Gregson: Quartets: Three - VI. …from a memory (5:49) -- Gregson: Quartets: Four - I. Three Parallels: 1 (5:14) -- Gregson: Quartets: Four - II. Three Parallels: 2 (5:02) -- Gregson: Quartets: Four - III. Three Parallels: 3 (4:41)