Please help me appreciate the second half of YEM more

I've got a problem. I'm a casual Phish listener and love love love their soaring instrumental melodies. I have an eargasm listening to the first half of YEM, it strike me as so beautiful and transcendent. But into and after the Firenze section, it leaves me cold. I want to try to understand what I'm missing or not understanding and how to appreciate this kind of stuff better.