■ Music: Albert Rivera
Guitarist Albert Rivera, who plays rock and blues and sings in English, Spanish and Portuguese, performs tonight (Sept. 20) from 5 to 11 p.m. at Morocco's Restaurant, 873 Castro St., Mountain View. Call 650-968-1502 or go to moroccosrestaurant.com.
■ Opera: Preview lecture
Tonight (Sept. 20) at 7:30 p.m., U.C. Berkeley music professor Mary Ann Smart will give a preview lecture for the upcoming San Francisco Opera production of "Lucrezia Borgia." Hosted by the Opera Guild, the talk will be at First Presbyterian Church of Palo Alto at 1140 Cowper St. Admission is $10 general and $8 for guild members. Go to sfopera.com.