Courtesy of Underworld Productions. A dance performance in the garden last year.

You’ll have your pick of outdoor concerts tomorrow.

At 3 p.m., a group of opera performers will take the stage at La Plaza Cultural Armando Perez to delight local kids with songs about cats, dogs and rhinos, as the Underworld Productions Opera Ensemble presents “Animals in the Plaza,” a collection of operas performed in their original Spanish, French, English or Italian languages. “We believe children respond to opera in its true form, not watered down,” director Gina Crusco said. Songs include “The Gingham Dog and the Calico Cat,” “Wynken, Blynken and Nod” and “El Rinoceronte/The Rhinoceros.”

Also tomorrow, the Cooper Square Committee presents its annual Third Avenue Festival: from 10 a.m. to 6 p.m. 150 vendors and non-profits will dot the avenue from Sixth Street to 14th Street. Performances will take place at East Ninth Street from 1 p.m. to 5 p.m. by singer-songwriter Michelle Fury, The St. Marks Ensemble, Kate Vargas, Filthy Rotten System, Marcel Van Dam et Paul, The Dan Piccoli Trio, and The JewelTones.