03/28/2008 02:46 am ET | Updated May 25, 2011

James Blunt's Concert War Message

British crooner James Blunt kept his ladies'-man persona intact Friday night at the Beacon Theatre - until he launched into his poignant ballad "No Bravery," and the collective swooning turned to gasps.

As Blunt revealed that he wrote the tune while serving as an armed NATO peacekeeper in Kosovo, the captivated audience watched a massive video screen display images of bombed homes, dead bodies and graves interspersed with smiling children flashing peace signs.

"The film was my footage, taken from our vehicles while we patrolled," the singer later told us at an after-party. "I recently had a chance to go back and play for the Serbs, and they were all in on my message. It's great because music is the strongest form of communication, and it was nice to connect with them."