Passion proved to be the Quad City Symphony Orchestra's strength in its season-opening program at the Adler Theater on October 1, but the performance was vulnerable to imprecision.

While the program was titled Beethoven 5, the highlight of the concert was a brilliant performance of Sergei Rachmaninoff's demanding Third Piano Concerto by guest pianist Haochen Zhang with bold yet sensitive accompaniment by the symphony under the direction of Music Director and Conductor Mark Russell Smith.