Lyric discussion by HoldSteadyYborCity 

Cover art for Store lyrics by Mountain Goats, The

I think the narrator of the song goes into a store and hears a song from an artist that died from a heard wound, (I saw you at the head of the heavenly chorus. and i heard your song ringing all through the store.) and he had some out-of-body expirence. (when i was passed out on the supermarket floor -or- n the five minutes when i was dead to the world, in a place far away from my friends and my home)

Or he could have heard a song that reminded him vividly of a lost friend, and he broke down.