IU was taken by surprise when she visited a Korean army base to perform some of her hit songs!
Lee Seung Gi invited her to perform to cheer up the military men.
And the men went crazy the moment she stepped on stage!
They followed along to every lyric of every song.
And even changed up her soft ballad, “Through the Night”, into a powerful chant!
Check out the army’s powerful welcome for IU below!