Get ready to be impressed by contemporary a cappella group Straight No Chaser at the Rose State College Hudiburg Chevrolet Center in Midwest City. The ensemble originally formed as a student group at Indiana University in the late 1990s. In 2007, a 1998 video of their comedic cover of "12 Days of Christmas" went viral. This sparked a reunion among some of the original members and the rest is history. Since then, Straight No Chaser has sold over two million records worldwide and have had over one billion streams on Pandora. They've been known to cover popular hits like Toto's "Africa," and Adele's "Rolling in the Deep" as well as classics such as "Over the Rainbow."