Passionate performances, outstanding international musicians, and superb programs account for the popularity of this annual series. Israeli-American pianist Benjamin Hochman, much praised for his “luminous touch,” joins the acclaimed Orpheus String Quartet and artistic directors Raphael Bell and Tim Summers for the first of the Festival’s five concerts. Vienna is the focus of the evening’s rich program–from Beethoven’s sunny Piano Trio No. 1 and Franz Schubert’s sublime Cello Quintet to Anton Webern’s little pieces for piano and cello and Alban Berg’s lush Piano Sonata No. 1. For more information about the series, which will take place at several venues around Charlottesville September 9-23, see www.cvillechambermusic.org or call 434-295-5395.