The OU marching band plays the fight song when the team takes the field and when the team scores or makes a big play. They also play it along with other fight songs while the Oklahoma defense is on the field to encourage the crowd to get loud. They play it on 1st, 2nd, 3rd, and sometimes 4th down when both the Oklahoma offense and defense are on the field. Some fans have informally counted it being played between 70 and 90 times a game.
ESPN writer Doug Ward has called the combined effect of "Boomer Sooner" and OU's horse-drawn Sooner Schooner wagon "as potent a one-two fight song/mascot punch as you'll find in college football."
The phrase "Boomer Sooner" refers to the Land Run of 1889, in which the land around the modern university was settled.Boomers were people who campaigned for the lands to be opened (or tried to enter the lands) before passage of the Indian Appropriations Act of 1889. Sooners were land thieves who settled before the lands were officially opened, giving them an unfair advantage on finding, fencing, and claiming farm land. If the charge of early entry was proven, they would lose their claimed land.