This has all 48 Feeling etudes for sax or oboe in a solid, well published book. It also comes with some duets/trips for oboes or saxophones. However this is the "1st oboe" or "1st sax" part so if you want to play the duets with others, they have to have the other part to play it. The paper inside the copy is the same kind that this publisher used for all its big book scores: its a bit dark and thin, but pencil writes well on it. A good purchase. Every serious sax player should study these etudes.
