Chemins IV is better known in its oboe-and-strings manifestation, though David's incisive playing provides a much sharper contrast to the body of strings than any oboe could, while the Duos for saxophone and violin are taken from the set of 34 Berio composed for two violins in the early 1980s. In Boulez's arabesque-laden piece, originally for clarinet and real-time electronics, the duetting with a digitally generated mirror image of the saxophone sound also acquires more of an edge than the original; whether playing soprano, alto or his tenor instrument, David's performance is a model of musicality and instinctive understanding.