Music composed by Keith Tippett, arranged by Hilary Jeffery with yrics by Julie Tippetts. The music on "Green Prism" is rooted in the last of the many commissions Keith Tippett wrote in the latter part of his career. It is quintessentially 'Keith music'. And it is equally an extension of the unique series of recordings Keith made with his wife Julie, from their earliest days in the 1970s as Ovary Lodge to the four "Couple in Spirit" albums. Julie's words and vocal performance are central to the powerfully evocative music presented here. "Julie's voice to me is like an instrument with many different tonal colours and amazing range. Her intonation is fantastic." Those are the words of Paul Dunmall, another long-time collaborator with Keith and also a key contributor to this album.