I went shopping with my friend at the mall today and I heard this song in Forever 21 that I liked. It had a pop-rocky/powerpop sort of vibe to it with a male singer. I couldn't quite understand what he was singing above the hustle and bustle, but I managed to get snippets:

1) "You gotta do what you gotta do" or something like that was repeated. It was either the bridge or the chorus, I can't remember.
2) I couldn't decide if I heard "Caroline" or "Get in line", but there was an "ine" sound.

Anyone know?