4. “Never Let Go”-[lastfm link_type="artist_info"]Bryan Adams[/lastfm]

Photo by John Moore//Getty Images

Asking one of the most important questions a person could ponder, Bryan Adams wants to know if you are brave enough to serve our country–and possibly lose your life:

Can you lay your life down, so a stranger can live?/Can you take what you need, but take less than you give?/Could you close every day, without the glory and fame?/Could you hold your head high, when no one knows your name?/That’s how legends are made, at least that’s what they say.