Los Lobos formed in 1973 and have released upwards of 20 albums in their venerable career. They mix elements of Tex-Mex and traditional Latin music with rock, country, folk, R&B, blues, and soul, as driven by multi-instrumental frontman David Hidalgo (his main instrument is ax, but he also juggles accordion, fiddle, bajo sexto, and requinto jarocho, among others) and singer-guitarist dark-sunglasses-wearing Cesar Rosas. Live, they’ve been known to cover artists ranging from Grateful Dead to Howlin’ Wolf. LEILANI POLK