The All Valley Band Tournament, hosted by the Grover Cleveland Charter HS Band Booster Club, will bring bands from all over Southern California together for an all-day event where marching bands compete against one another in front of family, friends, community members and adjudicators.  This event is expected to draw thousands of participants, parents and spectator.  This event is the only one of its kind in the San Fernando Valley, and in the entire Los Angeles Unified School District footprint.