What's not to like about the circus? Combine the breathtaking dazzle and grace of aerial performance, gymnastics, contortion, balancing and juggling with the soaring and introspective depths of symphonic music, and you're in the throes of even more wonderment. ISO players melded with seven artists from delivering solo and duet acts for this world-class troupe's return performance. Aerial artists Christine Van Loo and Alexander Streltsov soar and swirl above and beyond the stage with silks; Streltsov also juggles geometric forms. Aloysia Gavre and Audrey Moraru weave into and out of each other in a saucy tango duo and catch your breath with aerial and hand acrobatics. Elena Tsarkova, "The Lady in White," elevates gymnastics into the realms of ballet. Jarek and Darek bend, turn, wind and balance their bodies into statuary outside to inside in mesmerizing contortions. We wear our hands out applauding. Yet it's the clown to whom we give our hearts and Vladimir Tsarkov earns every one of the kisses we throw back to him from our seats. Be it miming or juggling or bewildering us with the 'how do they do that' dress routine with Tsarkova, Tsarkov teases us into smiles and laughter. "Cirque de la Symphonie's" composers ran the gamut from Bernstein to Williams to Sonheim, Chabrier to Saint-Saens., Strauss and Shostakovich, Marquez, Tchaikovsky, Kachaturian, Abreu, Kabalevsky, Rossini and Respighi, all delivered with gusto by ISO players under the baton of Jack Everly.