At night, I've been dancing with my 1-year-old daughter to this song lately, and when it ends, I just hum the last two progressions over and over.
The lyrics:
I'm gonna work it out
Cause time wont work it out
I'm gonna work it out
Cause time wont work it our for you
I'm gonna work it on out
And the epic choral part that the song ends to.
The two really are like a song within itself.
But isn't that like so many Arcade Fire songs: two or three songs wrapped into one. Enjoy.