AOH and Vocal Spectrum took part in the first-ever Acappellooza Summer, a week-long a cappella immersion camp at the University of Missouri-St. Louis led by Jim Henry and Debbie Cleveland, lead of the 2005 SAI champs, The Buzz. The camp culminated with a free concert at the Touhill Performing Arts Center with AOH, Vocal Spectrum and boy's and girl's ensembles.