Five fascinating works by the Belgian composer Maya Verlaak, realized by Apartment House and soloists Sarah Saviet & Mark Knoop, experimental compositions including a work of personal reflection based on "Alouette"; a conceptual game piece; a composition layering pre-recorded segments of "Greensleaves"; and two interactive acoustic & computer pieces.

A live recording of Julius Eastman's 1974 work "Femenine" performed by Apartment House led by cellist Anton Lukoszevieze, with Simon Limbrick on vibraphone, Kerry Yong on piano, Mark Knoop on keyboard, Mira Benjamin on violin, and Gavin Morrison and Emma Williams on flute, an ecstatic and intricate work using a repeating figure contrasted with both asynchronous and complementing backgrounds.

"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'.

Stockhausen's late 60s composition "Mantra" was a return to his intricately systematised approach to musical construction, expanding the possibilities and potentialities of the serial principle to allow for more melodic and embraceable compositions.