Cool Picks brings you the best in Pittsburgh entertainment every day! 1) Pittsburgh Youth Symphony Orchestra, affiliated with the Pittsburgh Symphony, is giving a free (download and paper tickets from their website) performance tonight at Heinz Hall. The SYMPHONIC DANCES program includes: Rachmaninoff Symphonic Dances, and Mozart Violin Concerto with Noah Bendix-Balgley, Faure Pelleas, and Melisande…