This summer, the Valley of the Moon Music Festival takes a musical journey to Vienna and explores the most influential music composed in the central European city. Opening this past weekend and continuing this weekend and next, the festival includes concerts on Saturday and Sunday that boast classical and chamber music from Viennese composers like Mozart, Brahms, Haydn and others. Featured performers include soprano Nikki Einfeld, and pianists Eric Zivian and Jeffrey LaDeur, who team up to perform Franz Schubert’s “Lebensstürme,” a work for four hands. July 21-22, at Hanna Boys Center, 17000 Arnold Drive, Sonoma. 4pm both days. $45. valleyofthemoonmusicfestival.org.