SAN DIEGO ENTERTAINMENT BRIEFS

San Diego tenor Jonathan Welch, who made his local debut as Pinkerton in San Diego Opera’s current production of “Madama Butterfly,” will sing at a free concert Thursday at noon in front of Civic Theatre. Part of the company’s “Opera on the Concourse” series, Welch will present highlights from “Madama Butterfly,” as well as arias and duets from other operatic and light-opera favorites. Welch will be joined by cast member and mezzo-soprano Anne De Vries, and by San Diego Opera chorus master and baritone Martin Wright.