Jeffrey Benson of San Jose State University instructs students from across the Kenai Peninsula to prepare them for the KPBSD High School Mass Choir Festival Monday at Kenai Central High School. The students are rehearsing "Tshotsholoza" by Jeffery Ames, a traditional South African song often referred to as the unofficial anthem of the country. The Mass Choir concert takes place tonight at 6 at Kenai Central. Soldotna, Kenai Central, Nikiski, Ninilchik, Seward, Skyview and Homer High School choirs will each perform individually, followed immediately by the Mass Choir. Admission is $5 for adults, $3 for senior citizens and $2 for students.