Now in its 18th year, the annual Tri-C High School Rock Off pits high school bands against each other for prizes that, in the past, have included recording studio time and the chance to open for a national act. Last year, bands from as far as Erie, Pa., came in to compete. The event kicks off tonight at 6 at House of Blues; several preliminary rounds follow. The top three acts from tonight will make it to the Final Exam, which takes place at House of Blues on Feb. 1. A panel of judges rates the bands at each concert. (Niesel)