April in downtown San Diego is a shower of cultural riches: en el viejo globo Through April 18 in the Old Globe Theatre: Marc Camoletti and Beverley Cross’ London/Broadway hit, “Boeing-Boeing” is a farce that concerns an architect who juggles three flight attendant “fiancées,” that is, until turbulence hits. Through April 26 in the Globe’s new Sheryl and Harvey White Theatre: Another comedy, Kenny Finkle’s “Alive & Well,” which concerns an ill-suited couple searching for the oldest living Civil War veteran. Tickets: www.theoldglobe.com or (619) 23-GLOBE. At the Lyceum Theatre Through April 11, from the San Diego Repertory Theatre: Todd Salovey directs a workshop production of “A Weekend with Pablo Picasso,” written by and starring Herbert Siguenza of “Culture Clash.” Siguenza sings, clowns, paints, sculpts and impersonates a matador, a Minotaur and a satyr. En el Teatro Cívico “La Traviata,” Giuseppe Verdi’s great romance based on “La Dame aux Camelias” closes San Diego Opera’s 2010 season April 17, 20, 23, and 25 (matinee). Celebrated soprano Elizabeth Futral sings Violetta. For information and tickets: www.sdopera.com or (619) 533-7000 En el Copley Symphony Hall On April 9 and 10 at 8 p.m. each night, Marvin Hamlisch will conduct a San Diego Symphony Winter Pops program titled “Marvin’s Manhattan with New York Voices,” featuring New York Voices, a vocal jazz quartet that takes listeners on a musical tour of Manhattan. April 22, 24, 29 and 30 conductor Jahja Ling and the San Diego Symphony present four special concerts composing a Jacobs’ Masterworks Beethoven Festival that encompasses symphonies, piano concertos and overtures and features pianist Yefim Bronfman. For schedules and tickets, go to www.sandiegosymphony.org or phone (619) 235-0804 At the Balboa Theatre April 13-18, Broadway San Diego presents “Cirque Dreams: Illumination,” an imaginative entertainment with acrobats, music and more, set amid towering buildings and infinite possibilities. Balboa Theatre, 868 Fourth Avenue at E Street, www.sandiegotheatres.org or (619) 570-1100.