Every 15 minutes, 48 custom-made bells covering four octaves ring out across the Ball State campus from Shafer Tower. As the crowning glory of the north end of campus, Shafer Tower rises 150 feet in the air from the middle of McKinley Avenue. The tower is named after Phyllis and Hamer Shafer, members of the Miller College of Business Hall o f Fame and benefactors of the university and Muncie community. The tower is used to play pre-recorded music or music played on an off-site keyboard. For special occasions, a carillonneur can climb the tower where a keyboard attached to cables is used to strike the bells and produce music.