The Beat Goes On

CHICAGO—If you dug Sir Doug, you’ll love this: Los Lobos, four guys from East Los Angeles, are really onto something. Having first hooked up in 1974 to play folk music, they went electric two-and-a-half years ago and began playing a mixture of rock ’n’ roll, Tex-Mex, old R&B, and norteno music, which is an accordion-powered dance beat also known among Anglos as “Mexican polka.”