For his part, Baca feels the weight of history. Conjunto music was born in South Texas, an original American art form pairing bajo sexto and button accordion. It’s as elemental as jazz or the blues.

De Los is heading back to the SXSW Music Festival with a showcase that will feature acts like Conjunto Rienda Real, Arsenal Efectivo and Edgar Alejandro.

MORE: Conjunto legend celebrates 80th birthday That happy sound made Jiménez a big star in San Antonio. According to the liner notes for the Arhoolie Records compilation “Flaco’s First,” he ...