Under the patronage of Permanent Representatives to the Organization of American States Joel Hernández of Mexico and Walter Albán of Peru, Opera Camerata presented a concert version of Rossini’s “The Barber of Seville” at the OAS June 23. Guests enjoyed wine and a silent auction before the performance, which featured many young Latin American artists already known to D.C. audiences, including Peruvian baritone José Sacín and coloratura soprano Elizabeth Treat. The evening continued with a delectable Latin American repast.