Lyric discussion by jamiexo 

I think this song is about living in the moment:

"When your head is off in future time, that's when things get out of line."

It's saying don't be so concerned about the future, and just live in the present.

And I looove the end of the song: "One song could end a war." Perfect.

And great choice for a second single, unless they decide to change their minds, haha.

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