Gordon Zietlow / Press

"I grew up singing in the Catholic church as a canter, with grandpa, grandma, dad, my brothers, and my aunts singing along side me," said Zietlow. "So the song has always been with me, but I never really took the time to really study and understand the lyrics. I just sang the piece and followed the hymnal, but out here having the opportunity to learn the song was really special." Zietlow came to a crossroads on how the sing the song, with or without using the guitar he was known for in the USO, until he had a conversation with his wife and she said, "Sing it like it was sung 200 years ago." And Zietlow knew what he had to do. "I didn't want to make it my own," he said. "It was about them and their sacrifice." Zietlow took the stage with 6,800 fallen souls behind him and hundreds of Soldiers before him; he clutched the microphone, fighting tears as he sings the first line, the wall next to him flashing the faces of the fallen. "Amazing grace, how sweet the sound."