If the current tour of Steven Isserlis and Stephen Hough touches down anywhere near (or far) from you, do not miss. Formidable separately, the two are dynamite together. Their program tonight in San Francisco's Herbst Theater: Brahms Cello-Piano Sonatas No. 1 and 2, Hummel, "Variations a la Monferrina," Suk, "Ballade" (a youthful work that made Dvorak take him as his student) and "Serenade," Martinu, "Variations on a Slovak Theme." A wonderful evening. Janos Gereben www.sfcv.org [log in to unmask]