When the annual High School Rock Off launched some 20 years ago at the Odeon, the promoters at the local Belkin Productions (now Live Nation) saw it as a way to reach out to area high schools and provide the kind of outlet that students might not have. Two decades later, the event, held this year at the Rock & Roll Hall of Fame, continues to thrive. Tonight is "final exam." The concert begins at 4 p.m., and tickets are $10. (Niesel)
Africa & Byzantium considers the complex artistic relationships between northern and eastern African Christian kingdoms and the Byzantine Empire from the fourth…