SUMMER IS HERE!! Now that the World Cup is over, Catch the NY Philharmonic, in the parks presented by Didi and Oscar Shafer or go to the Delacorte-Shakespeare in the park starting July 22, King Lear. If you like Russian music, impresario FRANK Breuer is holding "Frank's Art Evenings" his music series-again. Bring the wine or beer ( he likes beer) and listen to an amazing piano concert, of Tchaikovsky and Rachmaninoff. July 24, Duke Ellington Room, 400 w 43 st; 6:30