Alan Foote was singing at the September 11th Tribute & Patriotic Marathon at Staheli Farms in Washington City, The (St. George) Spectrum reported.
The event began at 6:30 a.m. Sunday and Foote was aiming to finish the song for the 911th time by 6:46 a.m. Tuesday, coinciding with the 11th anniversary of the attacks in New York, Washington and Pennsylvania.
"There have been things in my life that I haven't followed through on ... but this is really an important thing to follow through on, for me," Foote said Thursday. "I would love for the community to stop whatever they're doing at 6:40 on Tuesday and sing with me that 911th time."
The event will also feature actors dressed as former presidents for photo-ops and a Native American flutist.
Foote said the event will be a low-key opportunity for people to reaffirm their patriotism.
"No train rides, no duck races," he said. "I call it the ultimate back porch experience. I used to sit on the back porch with my grandparents and share stories. ... This is so people can come share stories."