When talking classical music, visions of Beethoven’s wild hair, antique grand pianos and even traditional 19th-century garb come to mind. But since 2003, with the Magnum Opus series, the Santa Rosa Symphony has commissioned newly composed masterpieces from modern composers. David Carlson’s work The Promise of Time is the final work in the series, opening a set of Sibelius with guest violinist Tedi Papavrami on Saturday–Monday, Nov. 12–14, at the Wells Fargo Center. 50 Mark West Springs Road, Santa Rosa. Friday and Saturday, 8pm; Sunday, 2pm. $30–$65. 707.546.8742.