Broadway in Chicago to host free annual Summer Concert at Millennium ParkThe free annual Broadway in Chicago Summer Concert will be held Monday, August 10 at the Pritzker Pavilion in Millennium Park downtown Chicago. The free annual Broadway in Chicago Summer Concert will be held Monday, August 10 at the Pritzker Pavilion in Millennium Park downtown Chicago. The free annual Broadway in Chicago Summer Concert will be held Monday, August 10 at the Pritzker Pavilion in Millennium Park downtown Chicago. The free annual Broadway in Chicago Summer Concert will be held Monday, August 10 at the Pritzker Pavilion in Millennium Park downtown Chicago. CHICAGO (WLS) -- It's a high point of the season, the Broadway In Chicago free Summer Concert, and it's happening Monday.