Jorge Mijangos, the ubiquitous son jarocho master, knows a lot about trying to spread the word. Jarocho is a sexy, rebellious improvisational music that originated in Veracruz among indigenous people and freed slaves. Mijangos is a smiling, quiet man with a strong, sinewy presence that explodes like a coiled spring when he plays. Bands that incorporate jarocho into their music, such as Las Cafeteras, invite Mijangos to play with them, as they did last October at the Bowl’s vibrant, second annual Día de los Muertos celebration. Mijangos, a tireless evangelist for his music, teaches in Ventura and Santa Barbara ?— ?currently running widely popular workshops at UCSB’s music department with Dr. Ruth Hellier-Tinoco.