The Building Blocks of Music: CSO, led by Stilian Kirov, moves to Beethoven’s middle period in Beethoven Festival concert by Justin Kelly on July 23, 2018 share Rossen Milanov conducts the Chautauqua Symphony Orchestra during their performance of Beethoven's Piano Concerto No. 1 Saturday, July 21, 2018 in the Amphitheater. This concert was the first of a three-part Beethoven festival this week.