sentences:  Performed since the early 1990s in the Metrodome, the drill form is executed while playing Glenn Miller's big band hit "In the Mood", and consists of the band forming concentric circles and collapsing them to fit all 320 musicians in a 12-meter wide mound-shaped circular formation in the center of the field.At the conclusion of the song, the "mound" is expanded outward once again.At the end of every rehearsal, performance, or other band event, the members, faculty, and staff of the marching band join together to sing an a capella arrangement of the university's alma mater and the state hymn, Hail!