Seems to be about the cold and far-off way critics and music fans in general treat bands, especially in a digital age where it's so easy to judge things far away from you (perhaps Arcade Fire are talking autobiographically here). "Walking around head full of sound" seems to be about a listener absolutely consumed by the music, critiquing every bit of it, judging the band solely on the music and not on who they are or anything about them. The result is very cold and inhuman, almost as if the musicians have been reduced to mere fantasy. People talk about them as if they weren't human at all ("talking like we don't exist"), and in the end Arcade fire feel like they're just a fantasy to their fans, something that people worship but something they'll never get to know personally ("Maybe it's true/ they're staring at you/when you walk in the room").
Seems to be about the cold and far-off way critics and music fans in general treat bands, especially in a digital age where it's so easy to judge things far away from you (perhaps Arcade Fire are talking autobiographically here). "Walking around head full of sound" seems to be about a listener absolutely consumed by the music, critiquing every bit of it, judging the band solely on the music and not on who they are or anything about them. The result is very cold and inhuman, almost as if the musicians have been reduced to mere fantasy. People talk about them as if they weren't human at all ("talking like we don't exist"), and in the end Arcade fire feel like they're just a fantasy to their fans, something that people worship but something they'll never get to know personally ("Maybe it's true/ they're staring at you/when you walk in the room").