The Knoxville Symphony Orchestra concerts this past weekend, as programmed by Maestro Aram Demirjian and delivered by the orchestra, featured a brilliant take on Edward Elgar’s Cello Concerto by the young dynamic cellist Zlatomir Fung. The orchestra players were in the spotlight for the 1947 concert hall version of Igor Stravinsky’s ballet Petrushka and its dramatic orchestral storytelling. And, the opener, Meilina Tsui’s Floridian Symphony, was a delightfully vibrant and atmospheric new work that calls on orchestral instruments and their players to explore and artistically replicate the natural sounds of a rural Florida environment and its world of insects, birds, and other animals.