I don't know a whole lot about Chronicle (there are scant few accessible translations out there, which forces me to rely on my own meager skill with the language), but I was thinking the metronome that plays in the background might be the ticking of a clock. Maybe the glass that shatters at the end is the clock being broken?

That's actually a fascinating idea! I also appreciate the usage of a church organ, something also seen later with Meiou.

After reading Majutsushi (the web era song confirmed in those staff introductions to be Noah's background), I can say that it is surprising how nicely Sho no Sasayaki's tale fits with it. Almost perfectly, more so given how Majutsushi points at Noah's intolerance to Loss. At the end, like Majutsushi says, the Eternity he got was destruction anyway.

He never truly escaped.

It is also insinuated something that I already knew (but confirmation is always good): that the book is what makes the main SH cycle, the one that function over all others, work in the first place and that the Girl Doll in the first Chronicle probably remembered everything from a past loop (from where her powers of future reading really stem from).

There are more, but with these musings should be enough... I still have to reach Chronicle 2nd in my reread after all.

That would truly imply the girl doll can only see what may be, not what is absolute. A very interesting take on it. Only the Chronicle itself is painted as absolute in Sound Horizon, interestingly enough.

I find the developments of Noah to be very, very interesting. It also seems interesting that he may be trying to speak for Chronica, my interpretation of him faintly interrupting her chorus. He definitely has a lot of issues, but he's surely got some plans of his own. It's very interesting to see Chronica ask for the listener's interpretation of the book, too.

Noah also asks this to Lucia, full of himself that he has everything figured out. The implications don't quite add up, which only further add to the table points of valid discussion. What do you think is Noah's understanding? And what's your understanding?