Woody Allen once famously quipped that he thought the Goldberg Variations were "something that Mr. and Mrs. Goldberg tried on their wedding night." For Bach aficionados, however, they are an ever-expanding text as each generation rediscovers and reinvents the variations. The University of South Florida has invited award-winning pianist Gilbert Kalish to perform "Thirteen Ways of Looking at the Goldberg," which are newly composed variations on the Variations. Kalish, long a staple of the Boston Symphony's Chamber Players, also holds a free and open-to-the-public master class at 10 a.m. Nov. 30 in the same location as his performance the following evening. Fri., Dec. 1, 8 p.m., USF-Tampa Music Recital Hall (FAH 101), Tampa, $8 adults/$4 students and seniors, 813-974-2323.