Most people see either a vase-like object, or two faces. You may see one image in one picture, and the second image in the other, or you may see the same image in both, just one is black and one is white. It all depends on the concept of perception.
The answer among these works that features a flute with a delicate, "breathy" sound in a relatively high register is Concerto for Orchestra by Bela Bartok.
