Both the works on this recording were written during wartime. Debussy’s 1915 En blanc et noir, composed during a late creative burst, is his musical response to the horrors of World War I. Messiaen’s revolutionary Visions de l’Amen from 1943, written to be performed by the composer and his teenage pupil, Yvonne Loriod, is a profound religious meditation whose emotional intensity is overwhelming. The rôle of the two pianos is clearly divided. Melodic and expressive elements are confined to the second piano, Messiaen’s part, whereas all that is percussion, brilliance and rhythmic development is heard in the first piano, Loriod’s part.