Steven Schick conducts two iconic works: Stravinsky’s Symphony of Psalms, with chorus, and Beethoven’s Symphony No. 6 (“Pastoral”), inspired by his love of nature. Also on the program are two works by emerging composers. In the midst of flux by young Iranian-American composer Gity Razaz balances influences from two musical worlds. Kevin Zhang, this year’s Thomas Nee Commission recipient, will premiere a concerto for two violins, featuring co-concertmasters David Buckley and Peter Clarke.