The collaboration between composer Philippe Leroux and the husband-and-wife team of Claude and Odile Delangle began in the early 1990s and has grown ever closer over the years. In October 2019 the three met up again for a few intense days, in order to record Noûs, a programme of works for soprano saxophone and for solo piano. The disc is bookended by two duos for the instruments – the opening SPP a reworking by the composer of an earlier score, and the closing Noûs that Leroux wrote for the Delangles only a few months before the recording.