Composed in 2195 by vocalist and composer Adaeze Solís-Bergström, initially for the funeral of her brother — a Tier 1 maintenance worker killed in a conduit collapse — 'Iron Meridian (The Long Walk Home)' has since become the dominant funeral standard for Shelf and Circuit communities across GLMZ. The song is slow and immense, built on a foundation of low brass and bowed metal percussion with Solís-Bergström's voice moving through it like something that has survived great damage. The lyrics describe the city as both killer and keeper — the iron and concrete that took the dead also gave them shelter, work, identity — and the chorus is less a comfort than an acknowledgment: 'You walked the long way. You walked the whole way. The city knows your weight.' It does not promise anything beyond or after. It simply witnesses.

The song exists in two distinct community versions: the Shelf version, performed a cappella by whoever is present and willing, with no fixed key or tempo — it adjusts to the singers, not the other way around — and the Circuit version, which retains Solís-Bergström's original instrumentation and is performed by local musicians at community halls. A Tier 3 orchestral arrangement was released in 2208 by a chamber ensemble, and while Solís-Bergström approved it, she stated publicly that it was 'beautiful and wrong in the way that comfort is sometimes wrong.' Vantablack Media has left the song alone, which is widely understood as a rare act of corporate self-awareness rather than oversight.