Delivery & Introduction

Piano Sonata No2 by Chopin & K466 by Mozart.
See the inrtroduction part of piano solo is so similar on both cases. The introduction part of piano solo in piano sonata No2 is very difficult to play even in virtuosos, as far as I know Ashkenazy was the only pianist who was able to play it as loyal as the notes shows - in Essex Univ. 10th of May, 1972. It also implies how hard for humans to get out of the womb. This introduction shows a striking analogy to human delivery. Then listen to K466. We are able to notice that the introduction part is so similsr to one another. I think Chopin refers to Mozart K466 in the making of his highest masterpiece.
Anyway in a sense, human delivery was the first and hardest experience in our life as hard as how to compose the introduction of the songs.