The Sierra Chamber Society brings classical music concerts and events to Walnut Creek's Grace Presbyterian Church, at 2100 Tice Valley Boulevard. Classical productions are performed by locally renowned musicians, many of whom are members of the San Francisco Symphony. Last year's program featured works by Beethoven, Dvorak, Haydn, Mozart and Ravel. Get ready for the Sierra Chamber Society's 24th season by visiting its Web site for ticket and program information.