“Tzigane” is another term for a “Hungarian Gypsy,” and the music of the Roma has fascinated composers for generations. Among them are both Brahms, whose G minor Piano Quartet ends with a rollicking “Tzigane” dance movement., and Valerie Coleman, who explores this music in a modern context. We open the program with another tribute to sounds from the past: Lowell Liebermann’s take on a theme of Bach.