Returning to its post under Highway 281 (in a parking lot north of Pearl Parkway), the Pearl’s Échale block party promises a wild and all-female tip-off to the summer. New York quartet Mariachi Flor de Toloache (pictured) brings a bilingual mélange of soul, cumbia and traditional mariachi, with bright instrumentals and arresting group choruses. Girl in a Coma’s Nina Diaz fronts her five-piece alt-pop band with the confidence of two years of solo performance. San Antonio’s Mariachi Las Alteñas proves the booming power of a mariachi in the big band setting. And Chulita Vinyl Club, one of South Texas’ premier spinning collectives, provides the house blend.