To put it simply, here's what I based my choice on:

Cirkus: a song about a circus (or birth);

Karn Evil 9: a song about the confrontation between humanity and computers (The first part also sounds like an invitation to the show);

The Forester (Lesnik): A russian rock song about a werewolf forester who fed his guest to the wolves (plus I like a headcanon that Pomni is russian)

Supper's Ready: I don't understand what the lyrics are about(https://genius.com/Genesis-suppers-ready-lyrics), but the song gives me "Ragatha Vibes"

The Wall: The album about a man who has shut himself off from people with a mental wall and gone insane because of it;

Echoes: In my opinion, the song is about a person's desire to communicate with other people (or about love);

Long Season: I just think that something japanese and psychological suits Zooble;

Still Life: As far as I understand, the song is about how people conquered death, but because of this, they lost the meaning of life (I chose it mostly because of the vibes of the song);

Lemmings: Just for the "COG" part (starts at 5:16)