b'The Shannondell SingersMonday, 3 p.m.(Performing Arts Theater)Brian Horoho directs this co-ed chorus that rehearses weekly and performs semi-annually. Nature Club A-ZMonday (2nd), 2 p.m. (Bradford movie theater)This group explores the natural world full of mystery, excitement and awe-inspiring sightsthrough the use of educational videos.25'