During an eastern states tour on June 21, 2011, the Mormon Tabernacle Choir made a stop in Colonial Williamsburg, Virginia. The Choir was scattered throughout the audience watching a patriotic program that was taking place outside of Raleigh Tavern. At a certain point in the program (approximately 3:26 into the video), a few members of the Choir started singing “My Country ‘Tis of Thee,” followed by more and more Choir members until all were singing in joyful harmony. A few minutes later (approximately 6:37 into the video), the audience was asked to sing “Yankee Doodle,” which the Choir participated in as well.

The impromptu performance is known as a "flash mob," which is defined as a group of people who assemble in a public place to perform a type of entertainment, such as dancing or singing before dispersing.

At about 8 minutes and 40 seconds into the video, a man steps up to the microphone and announces him self as John Bacon, Senior Vice President of The Colonial Williamsburg Foundation. He then said, “I invite you all to give yourselves a hand. You have just participated in a live performance with the world-renowned Mormon Tabernacle Choir,” resulting in immediate cheering and applause. When the applause settled, Bacon went on to say, “The Choir has almost 400 members; they range in age from 25 to 60-ish,” which drew laughter from the enthusiastic crowd. “They practice and perform weekly, they have performed around the world in 28 different countries, and they’re here on an unusual visit to the east coast that began last evening in Norfolk. . . . We are most grateful and thankful that they fit a stop in Williamsburg along the way,” added Bacon.