10:30 a.m. public tuba/euphonium concert; 9:30 a.m. is tea/refreshments, not another performance. Free with required ASU Kerr reservation; suggested $5 contribution and food donation are optional, not admission. Published public free admission. Required reservation, capacity, online purchase windows and additional service fees remain the presenter’s terms; no availability promise. Arizona local MST (America/Phoenix), not Pacific time or a literal UTC conversion of the proxy’s mislabeled Z field. No end/runtime, related event or ticket-vendor checkout is inferred.