Amazin' Blue presents their fall a cappella concert: Friday the 13th! Their 13th CD, A Baker's Dozen, will be released at the show. As the oldest co-ed a cappella ensemble on campus, Amazin' Blue has brought music to the University of Michigan since 1987. With over 25 years of musical experience, they remain the University's most decorated a cappella group, and are the only university-sponsored group- proud to be supported by the University Activities Center.