The Cleveland Orchestra opens its season at Blossom tonight with a special performance of pieces by Reznicek, Beethoven and Mussorgsky, including the perennial crowd-pleaser, Pictures at an Exhibition. The concert will be presented with Image Magnification (IMAG), providing live video of the performers displayed on LED screens in the Blossom Pavilion. Franz Welser-Möst conducts the orchestra. Fireworks follow the performance. It all starts at 8; check the website for ticket prices and more details. (Niesel)