A 4-disc box-set with a 44-page booklet of extensive notes, presenting John Cage's Number Pieces which he wrote in the last five years of his life, adapted for mid-size ensembles and performed by the London-based ensemble Apartment House, compositions 'Five' to 'Fourteen' along with alternative versions of three of the pieces; significant and essential.

Three minimal works for small ensemble incorporating electronics by Australian-born, UK-resident composer Newton Armstrong: 2 performed by the London-based Plus-Minus Ensemble directed by Mark Knoop as an acoustic quartet configuration and one as an electroacoustic quartet; and a solo work for multiple cello layers and resonance performed by Séverine Ballon.

Eight sophisticated chamber pieces composed by Linda Catlin Smith and realized by the Canadian Apartment House ensemble, including a solo piano performed by Philip Thomas, a piano duo with Thomas and Mark Knoop, and works for percussion & cello, 2 quintet pieces for strings, percussion and winds, and two 7-piece conducted works with two percussionists, strings and brass.

Bryn Harrison's highly acclaimed, labyrinthine composition for violin & piano from 2014, expertly realised by violinist Aisha Orazbayeva and pianist Mark Knoop, for whom this 5-part work of beautiful repetitions reflecting tapestries of sound was written.

"Two Pianos" is one of Morton Feldman's most experimental and radical works, performed here by John Tilbury & Philip Thomas; plus lesser known works including 'Piece for Four Pianos', 'Between Categories', 'False Relationships and the Extended Ending' and 'Two Pieces for Three Pianos'.