"I think we owe it to them, because the music that we're playing -- the kinds of traditions that we come from -- have their roots in New Orleans," Gutrhie said. "You got Delta blues and you got Chicago blues and you got bluegrass -- all kinds of stuff that was all mixed because New Orleans was sort of the original melting pot."
The trip was special for Guthrie for another reason: It was his first trip on this famous train.
"My commitment to this won't end when the curtain comes down on the last show," he said. "This is something we're going to want to keep working on."
Brazella Briscoe and the Zion Harmonizers are grateful for the effort.
"Good night, America, how are you?
Don't you know me I'm your native son,
I'm the train they call the City of New Orleans,
I'll be gone five hundred miles when the day is done."