As always when this happens I am astonished.
Also, I am reminded of what constitutes greatness in composition: Notes work a bit like the fabled points you learn about in Geometry 101. One point floats in space; two points make a line, another floating entity. It takes three points to define a plane. Thus it works with tones.
Except that tones are more complicated than those abstracted points, for tones resonate, of themselves, and even more so in combination with other tones. So one tone is more than one and two more than two, etc.
Music is truly astonishing.