Lyric discussion by landofsubmarines 

Cover art for Mansard Roof lyrics by Vampire Weekend

Whenever he says "The ground beneath my feet, we are garbage and concrete," I can't help but think of "Concrete and Clay" by Unit 4+2 when they say "The sidewalks and the street, the concrete and the clay beneath my feet begin to crumble."

...but I have a feeling there isn't any sort of connection between the two

YES!!! i absolutely think of this too! the first time (and many times after) i heard this song i thought it was one of those mashups or something. lol.

it's an obvious reference that I enjoyed very much.