Las Cafeteras came together when seven young men and women started taking free music classes at the Eastside Café, a bustling Chicano cultural center in northeast Los Angeles. What started as a casual exploration of their Mexican roots quickly turned into a vital community institution, and now Las Cafeteras’s contemporary take on the traditional Afro-Mexican grooves of son jarocho has turned the band into a world music force. Soltron grew out of the Mission District’s vital arts scene, blending Latin jazz, Chicano rock, and Brazilian batucada with strains of hip-hop and electronic music.