Alan Jackson took the stage during the 2015 ACM Awards to perform "Where Were You (When the World Stopped Turning)." Jackson was introduced by football great Troy Aikman, who dedicated the song to the victims of the Oklahoma City bombing, which occurred 20 years ago today, on April 19, 1995.

The singer performed an acoustic version of the song to a hushed crowd, as images of the Oklahoma City bombing flashed behind him.

Jackson penned the song in honor of the tragic terrorist attacks on Sept. 11, 2001. He wrote the song in only an hour but says that he believes he was just the conduit for the beautiful lyrics.

“It was just a gift,” he tells The Boot. “I got up and scribbled it down and put the melody down so I wouldn’t forget it, and the next day I started piecing all those verses together, thoughts I had or visuals I had.”

Although not a nominee this year, Jackson is no stranger to the ACM Awards stage. He's won 18 ACM Awards throughout his career, including Top Male Vocalist three times. The Georgia native has also been a frequent performer at the ACM Awards and even co-hosted one year -- in 1994, with good friend, Reba McEntire. But it was his performance that year that had people talking.

After being told he had to perform his latest single, "Gone Country" to a track, instead of having his band play live, Jackson took the stage with his band, although it quickly became apparent that Jackson's drummer was playing without drumsticks.

Jackson recently announced the release of his 15th studio album, Angels and Alcohol. The 10-track record includes seven songs written by Jackson and was once again produced by his longtime producer Keith Stegall.

The Grand Ole Opry member currently has an exhibit, "Alan Jackson: 25 Years of Keepin’ It Country," at the Country Music Hall of Fame and Museum. The exhibit, which includes Jackson’s collection of Mayberry memorabilia, the guitar he played at the CMA Awards when he debuted "Where Were You (When the World Stopped Turning)," the Harley-Davidson motorcycle from the cover of "A Lot About Livin’ (and a Little ‘Bout Love)," and his first car, a 1955 Ford Thunderbird, has been extended until June, due to popular fan demand.

Jackson is currently on his 25th anniversary Keepin’ It Country Tour. Upcoming dates are available on his website.

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